I run a 350 turbo behind my ZZ3 in my 64 EC. Everything should bolt right up. I did have to build my own crossmember when I added Hooker Super Comp headers though. They didn't line up with the factory X-member humps.
BTW, 350 turbos weigh less than the 400's and can last a long time. Mine ran 2 full seasons in a late model stocker on SC's fastest 1/2 mile dirt track (Lancaster Speedway) before I put it in my 64 for the street. Only thing I did was modify the valve body, change converters and tranny oil. It still works fine.
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Team Chevelle Member #322
Long time Chevelle fan and an owner since 1973
