it's been a while sense i have posted anything so i'll update...
I only bored it .30 over so it's actually a 486 but it is up and running.
I went with a TH400 tranny kevlar plates 32 sprag with reverse manual valve body that should handle my HP with no problems and a 2200+- stall..
I'm not sure on what HP it's going to make yet calculators put it at 700.
I'll be at test and tune this friday to try it out.
wish me luck and i'll post my et later