Suggestions on performance upgrades for 225

You could have a 400 HP 360 for half what a hopped up slant would cost.

This is true. I'm gonna have ~$2500 in a slant, and I guarantee its not going to come anywhere close to 400 horse! I'm going to guess you can swap to a v8 for the same amount or cheaper and not have to constantly worry about it blowing up (this is a real concern with forced induction) and be much easier to tune. And I'll go out on a limb and say a 4bbl 360 will outrun my slant and any turbo slant you can build for the same money.

You've gotta have a passion for the oddball 6 to hop 'em up and like it.