But why? Do you realize with a say 2600lb race weight w/ driver and 400+whp/450+wtq, the car's gonna be nasty anyways? I mean sure go bigger/better eventually, but see how far you can push those heads, plenty of guys making 300whp/350wtq NA on those heads, throw a 100-150 shot on top and you're pushing the limits of the block and *should* be knocking down some killer times.
Personally I'd throw whatever money you were going to throw at heads ($1000?) and do a built 8.8 and maybe a drag suspension if that's what you want, get it to hook the best and with bolt-ons/spray I don't see why you'll need more.