Best 273 and 318 builds (NO 360's please)

This is my current set-up:
72 318 Block .30 over
79 318 Heads, not sure of the casting number think they are 72 cc chambers
1.88/1.60 valves
purple cam 276/284 .444/.453" 112 degree
LD4B Edelbrock intake
650 Edelbrock carb
windage tray
double row timing chain
Mopar Electronic ignition with and orange ECU box
Dakota Manifolds

it is a 200 hp 275 ft lbs torque motor.

I will pull it and rebuild it next year, zero deck the block etc.
KB167 pistons
Eagle rods
302 castings heads, if I can find them.
May mill my heads to reduce the cc's , not much just enough.
Just want at the least 300 hp, in a 2600lbs car that will be enough fun for me and the car will still be driveable as we take it out of town alot....