The pistons are Keith Black,10.5 to 1,I put a Hughes cam HE3038AL 0.515 / 0.535,in it.This is the matching #s engine for the car.I had Koffels Place do the machining,balancing.I also put in some Eagle rods and we blueprinted the bearings.I would really like to keep the motor as stock appearing as possible on the outside.