1957 giulietta spider

Hello, I am having difficulty putting my 4 speed transmission up to my engine. I think I might have the wrong flywheel or the wrong starter. What is the correct flywheel size for a 1957 veloce spider (1300) engine vs a (1600) engine. Diameter and tooth count would be great! Thank you.

1957 ALFA ROMEO GIULIETTA SPIDER 1957 Alfa Romeo Giulietta Spider - prima serie (750 D). This rare first series Spider has just undergone a thorough reconditioning by our Italian experts. This is a numbers matching US spec car that was built on March 6 1957 and first sold on March 1957 to the...

Has anyone seen this car? I'm considering bidding on it, but live outside the US. It's said to be a very low mileage, two-owner car, and the photographs I've seen, from the dealer in Massachussetts who has given it over to Goodings for their January 2012 auction, certainly look impressive...