Hi Alan, thank you for your input, that is what I was expecting. Mr . Yamamoto said the engine pulled from a Z432-R, but everything which I saw was a standard S20 engine parts . I understood that is correct,
Z432-R which was sold to the public has a standard S20 engine. When you want to race , you have to buy and install race option parts into your S20 engine, I got it.
I have seen and missed race option piston, 8H/8L camshaft, camshaft sprocket , but if I managed obtaining those parts, it would not work. I need to have a specific head gasket, specific valve springs, seals, etc, etc.. And professional assemble work. It is just a long way !!
Kats
I restored my race and rally manual , Terashima-san kindly gave me . I used the parts catalog' s picture. The Z432-R is exactly the same size picture of the manual.