Your PM box is full....My Bilsteins were done by the Bilstein shop in Mooresville NC. Best we could get hp-325 and torque-375 at the rear wheels. No tri-y's, just Beyea and Schoenfeld and the Beyea's are NOT worth the money on a 602. Hendren did go thru our engine and there was virtually NO gain, the biggest gain was different carb spacer. Found a regular 4 hole 2 inch spacer to be much better than the Super Sucker or anything else we tried.