Even a stock piston for a magnum engine is going to be a hypereutectic cast alloy. But any of the hyper eutectic pistons from Keith Black or Speed Pro will do the trick for a 400HP motor.
Dave Clement
Pembroke, MA
03 PT Cruiser GT Turbo
99 Dakota SLT+ CC 4x4
68 Barracuda sport coupe
http://home.comcast.net/~dgc333/
