Heads have not been cc’d yet. These are Speedmaster CNC heads. 190 intake port. 2.02 and 1.60 valves. Supposed to be 65 cc chambers. The pistons are 2332 forged replacements. 040 over, so 4.080 bore. Look just like a 10.5 stock piston. Pistons are .015 above deck. Exhaust will be TTI 1 5/8 to 1 3/4 step headers. Full TTI 2 1/2 exhaust. Hughes roller rockers. Kim