Help me hook this thing up... I have the Chevy guys gunnin' for me...

What tire are you going to run? If it were me I'd put a set of cal-tracs on it and use the factory springs for now, also a decent set of shocks. I've never cared for the jacked up look that come with SS springs, but some people like it.

Your engine is going to be a torque monster with that cam will probably be done pretty early in rpm's. I ran a Hughes hydraulic in my pump gas 340 with well ported Edelbrocks that was 236/242, .586/.592", 108 installed at 104. With 430 gears it was quickest shifting at 6400. I suspect that yours will be done around 5800-6000. It will be a fun ride!