HISTORY: (as copied from the AlfaBB 2022 names are omitted and conversation has been edited for the facts)
Hi,I have just been offered a 1958 Alfa Spider Veloce , it looks like a veloce,has the engine with webers, the air box etc . Owner says it's a 1958, The plate on the hood matches the firewall, 1495 00308 and the motor is 30717, Anybody have a book to confirm year and if it is a true veloce? I am inserting a photo of the plate , I could not get one of the firewall at this time.

According to Evan Wilson's "Giulietta" reference book (p. 48), the chassis number looks like an early `56, and the engine number a late `57 (both in the veloce ranges). As you note the real ID's are the chassis number stamped into the sheet metal high on the passenger side of the engine bay firewall / the engine number stamped on the intake side of the engine block itself. If those numbers all match the ID plate, without knowing more, i would guess it's a `56 veloce with a replaced engine (a later 750 veloce motor) and a remade ID plate. The correct ID plate should identify the type as "750F" rather than "750G," But perhaps those more knoweldgeable than I can tell you more!

The car is very much like a veloce, it was a monoposte converted to a veloce (full windscreen etc) by Alfa prior to delivery. The bonnet should have te holes in the inner frame as shown on keiths car as well as on the car I am aware of in Italy (chassis 311) s is the first car in the register of Christopher see attached link. 750F SPIDER VELOCE REGISTER I am interested in the data plate, it seems that chips were taken out of them at a certain time, I need to check with Keith as I believe that one of his employees still has one to verify, I cannot see it properly in the pic from Keith. very interesting car, I would want one for sure.good luck,

Guys, thank you all very much for the response, I purchased the car last night after finding the thread that Doug mentioned in his message,although the one I saw was by dretceterini in italian in a thread dated 2008. It was sitting on a trailer by the side of the road when I saw it ,I was road testing the 2600 and decided to stop and speak witht the owners. The hood and trunk were up and I saw the frame with holes around the edge of the hood , which I never seen before except in pictures. I started looking at it closer and decided I should risk a divorce rather than letting this car sit there. Iam picking the car up on Tue. I will post more pictures when I get a chance, agin thanks for the help.

Very nice .. as cited by previous posters it is a 750G which designated a Monoposto or "single seat" race car. They were produced with some lightening and a full cowl over the ****pit for streamlining with only space for the driver. There were no safety features like roll bars. Most of them were produced for the US market and given to dealers who raced them or converted them to standard Veloces for sale (as this one was). Al Leake had a "car" that he campaigned as a Sebring Spider (not the black Sophia) with Monoposto features but on close examination it was never a real 750G just parts off of one on another chassis. p. 146 -147 in the book cited is an interview with Consalvo Sanesi, the Alfa test driver who entered one in the 1956 Mille Miglia.
Hoffman's pipe-dream of importng 2000 probably fell apart by import restrictions he didn't consider and a market that never materialized.
This is a very lucky find... Much luckier than finding a rare coin in change. I hope all the "stuff" under the hood is there. I would guess that each G was massaged by Facetti or Conrero before it left Italy. I am sure Alfa sent the "special" cars to these people as they were way more detailed than Portello was capable of producing or putting the time and money into. You will be surprised by the effort made to drill out frame members and brake backing plates to lighten the car. PS Luca found his in the US

My limited knowledge of G Production Spiders, gleaned from various Alfisti and resouces such as books and the BB agrees with what Divotandtralee and Keith Goring on the other thread have said.
From my understanding some of the G Production cars had aluminium doors, bonnet & boot lid, but not all of them, from what Uncle R says it may be that some of the G Prod cars had drilled frames and other parts to save weight.
The Veloce motor is an interesting enigma, it's from very late in '57, my 18 Feb '58 Sprint Veloce Confortevole had motor 1315 30800 and while motors and cars were not built in sequence, I doubt that this Spider waited almost 2 years for a motor, most likely what happened is that the motor was a Dealer change and I'd theorise that the Dealer stamped a new data plate to go with the replacement motor.

The doors,hood and trunk lid appear to be aluminum, I checked the airbox and it doest feel like steel but I am not sure, I will check the underside on tuesday,

Quite a few folks probably reached for their "Giulietta" by Anselmi this afternoon, as I did, as #0308 shows up about three-quarters of the way down his list of "G"s as being white with the motor number listed above and going to the Hoffman Motor Company, and to have been modified into an "F." Built July 1957. As others above have said, and many more will say, this car is an extraordinary find. The only other "G" that the majority of the Alfa community is aware of (I'm in that group) is reportedly in the Alfa museum in Arese.
This discovery could answer some of the questions (or confirm what little is known) about what the lightweight spiders were like that Hoffman ordered to come to the U.S. to compete in SCCA, and lead to a fresh effort to determine why that sanctioning organization apparently didn't accept them. And, then, where they went.

OK, I have to withdraw my earlier premise that the motor may have been changed :rolleyes: This proves that the Veloce motors were batch-built and then drawn from the stores as the Veloce bodies were sheduled onto the assembly line, it's the only possible explaination for 2 cars built 6 months apart to be running engines 100 numbers apart - Portello must have been a buzz of activity in the early years... more Alfa Archeology stuff needed here

Might want to check whether the oil pan is magnesium ...
Are the door frames drilled/swaged for lightness as well, eg at the bottom? Some lightweight Giulietta SS had that feature.
Are the bumpers steel or aluminum?
BTW, I love the Florida hot rod rear license plate. I'd keep it that way even if it may mean points off in a concours ... looks way better than a high mounted US plate and brings out the body lines much better.
IMO the only plate that looks good in the original position is an Italian one.

February 2012, The restoration has started, with the aim of bringing the car back to full original specs, color, trim etc... Planned finish by June 2013