This thread would try to clarified all this and first about the model number.
The first Alpine single seater was the A270 F2 during the beginning of 1964
.
The design was made by Ron Tauraunac, as a consultant, and Richard Bouleau at Alpine. They built a very simple multitubular chassis and put a Renault Gordini engine, (who was built from the Renault R8 bloc. Amedé Gordini put 2 ACT and 2 weber DC for a 996 cc (71,5 x 62 mm) and reach a very poor 100 ch) and a Hewland Gearbox.
Jabby Crombac say in Sport Auto N°27 of april 1964 that he have see "Two complete cars for the first race : Pau GP with Mauro Bianchi and José Rosinsky. It was also two other rolling chassis and a third as building".
So, it's possible to think that 5 formula 2 Alpine A270 were a basic count.
The chassis number was on theleft side of the rear"traverse", and you can see chassis #1751 on this first picture take in Mars 1964. (I believe that it was the reason why some people speak of A270 Formula 2 as a 17...or something like that)
Here the A270#1751
