For the remaining items, the breakdown goes:
E = Abarth 750. Weber 32IMPE carb (originally used on Fiat 1100), with modified throttle linkage & choke cable set-up. Unfortunately, yours is missing the small but important L-shaped bracket that holds the end of the choke cable outer sheath in the proper position/orientation for use with this carb. Still, the carb & manifold appear to be in good, clean condition which is a plus. The black steel/cast iron intake manifold is an original Abarth factory-fitted item on the 750cc engines in their coachbuilt cars. Money-maker #2. :wink2:
It appears you also have a second separate manifold like this, probably intended by the previous owner to be used with carb D if/when it was modified correctly.
(I'd be interested in buying this manifold for my own 750, if available?) :whistle:
F = Fiat 600 or 600D. I'd need to know the cast-in part number to be able to tell which engine it goes to. The part # is often found on the side of the manifold; 100.000 is 600, 100.D.100 is 600D.