Hi Guy
First of all, the original colour scheme of the '74-'76 factory race cars
was lobster orange and pistachio green, in matt finish.
The second comment is on the engine. Your engine, on the front of the car, has a strange FIAT label on the cylinder head.
The original 16 valve engine, the 232 in the different cubic version, has an ABARTH inscription on the valve carrier.
Without doubt it's an original design cylinder head, but do you know from where does your engine coming from?
