I can tell you what my dyno'd 408 Magnum is:
cast MP crank
Ross 9:1 pistons
Eagle H-Beam rods
stock iron R/T heads
MP 1.6 roockers
Comp/KRC cam .510 224/228
MP M1 EFI intake
24 lb/hr injectors
MP throttle body
computer reflash by KRC

381 RWHP in a 4400-lb Ram, so roughly 450 crank HP. When I was building it, Desktop dyno said it was good for 480 HP. I kept mine pretty mild since its mainly a fun street cruiser; I say yours will be good for a about 490-500 crank HP.