Well, being just a driver, go for a Chevy 350, there cheap to build, make more hp than your 301 turbo you have in your other, and there easier to adapt more common parts into, like if you wanted to put in a 4spd, ya could find a super t10, and it would bolt right up, with a pontiac motor, special bellhousings and adapter plates so it will mate up, most everything aftermarket like that is designed around the Chevy platform. A super T10 4spd is a pretty common trans, the power you want, you don't say but, 350 hp reasonable? the trans should take it. The cars were available with 4spds, so the clutch pedal assembly, console and variouse other parts needed in the changeover, are available. As mentioned earlier, a 5 or 6 speed is a better choice for economy. Myself, I like the old 4spds, with the long chrome shafts, like they put in the 60's cars with floor mounted 3 and 4spds. I see some gen 1 camero's and other cars like that, that had 4spds but were replaced with 5 speeds, and the shifters they used are those " Short Throw " shifters, there the doofiest things I ever seen.