I'm building a 27 T roadster with a 120 Mercruiser. I bought a vacuum advance distributor from Carquest, made my own intake manifold to use the Rochester 2GC from the boat, and made my motor mounts. I'm toying with a T5, and the flywheel/clutch parts are standard chevy V8 153 tooth parts, clutch disc to match the trans splines. Due to space considerations, I probably will go with a Turbo 350 though, and its easy to bolt up, again a 153 tooth flexplate, and slightly higher stall converter, all with a 3.73 rear end from a S10 pickup. Exhaust header came from Clifford.