With the stock compresion, your likely to make about 300 HP at best. That is whats hurting now. Bumping up to a 9.5-1` would get you around 320 - 330 HP.
I don't know how far you need to mill the heads for this.
Pistons are .30 over and crank has been done .10 over.Can,t I use the stock flex plate?If I buy the 2500 stall do I have to add weights?I,d better go see my tranny buddy for some more info. before spending and install.Thanks guys!