You'll need to do a lot of mods in order to be around 500 HP. I run a stroked 360 in my Dart, bored .070 over, custom ground crank, 6" small block chevy rods, 13.9:1 domed pistons, W2 heads, cam and torque converter to match the set up, Victor W2 intake with a Holley 1050 Dominator.