If you have the FT -- really there's not a whole lot left to do.

Depends on what you're doing with it: Bashing, then maybe some RPM a-arms and beefier tires like masher2k's or something.
Mip 4 n 1 clutch is a good product when you drop a powerplant in.

On the engine -- any standard 12-15, and most small-block 18's will fit.

If you select a pullstart/rotostart engine, then you'll need to make sure your FT has the pullstart motormount, but if you bought the Pullstart kit, that doesn't mean you have to use a pullstart motor.