1972 340 challenger

How much do you want to spend? If it was mine and it was in decent running condition, I'd get the heads cut .040-.060, do a good 3 angle valve grind and put in the bigger (2.02) intake valves. If you don't like headers, try to find some 71 and earlier exhaust manifolds. Now if the motor's shot, rebuild it and get 71 and earlier pistons, the 2.02 valves, the valve job, and the manifolds. Now that was sorta easy wasn't it?

don