Home port the heads. Simple and doesn't cost anything except time and a grinder. Someone posted the old porting templates recently, maybe in the tech section. Mill them if you can with a good valve job.
Old school 284/484 108 LSA cam installed at 100-102 with a new timing chain using the stock low comp piston. Get an cam you like cut on a tighter LSA and install it a bunch advanced, isky 230/480 would be another. The 284/484 can use stock style rockers, bonus!
Find a torker/street dominator/rpm intake and a 750-850dp.
Curve a stock electronic distributor and give it a lot of initial timing, total in the 36-42 range.
