Porting Mopar 318 smog heads.

I believe a 318 combo can make nearly as many horsepower as a 340/360 cui, but not as much torque. These heads is bought/made for under 400$ with new valves, and i`m just showing how much is left of chamber, when milling cylinder heads 0.05 inch/1.3 mm for more compression, before milling 68 cc, now 56 cc chamber, this will be my version of a junkyard jewel 318 engine with stock piston.