Ok here is my combo:

+0.035 over 340
4" Eagle forged crank
reconditioned stock rods
custom forged Venolia pistons
9.5:1 compression
stock 340 'X' heads completely gone thru (no porting)
Mopar Performance 484 Purple Cam (241/241, .484/.484 lift 108 lsa)
new stock stamped rockers
Edelbrock RPM airgap mainfold (dual plane)
Holley 770 Street Avenger carb (it has been re-jetted)
FBO ignition system
TTI headers and TTI 3" exhaust system with Flowmaster 40 mufflers
3.91 gears
4-speed
70 Cuda

The car dyno'd at 375 peak RWHP when the clutch started to slip at 5000rpm (so there is still more HP in there) and 484 peak RWTQ. Figuring a 10% loss for the drive train this puts the HP at about 420 at the crank (when the clutch started to slip) and 537 TQ at the crank.

Future plans for the motor:

-Ported Eddy heads
-10.5:1 (or higher) compression
-Roller hydralic cam and rockers (the cam will have a little bit more duration and more lift then the current cam)
-850 Holley DP Carb

With these upgrades I hope to make around 500HP/500TQ at the crank. Looking at what other people have posted with their combos this should be possible.