Supercharged Smallblock Combination.

A recommendation:

Look at doing a turbo. It's a bit more complicated to install, but it has higher horsepower returns for the boost. We have a guy in our club with a Twin Turbo 440 in a 65 Belvedere, and it's just nuts. Local tracks won't let him run until he gets a cage installed.

TT Belvedere

TT Belvedere II

I've seen and heard this thing run, and it's freakin awesome. with the exception of the header fabrication, he has done all of the work himself.