318 with 360-587 1.88 heads

Compression will be pretty low and the .484 mopar cam will be way too much unless you have alot of converter or gear. I think a cam in this range would be better. As far as hp i'll say 325-350 tops.

http://www.summitracing.com/parts/LUN-60402/

BTW It will be behind a 4 speed with a 3:23.