You say this build is for a truck, do you plan on doing much towing? If so, you might want to keep it closer to a 9 to 1 compression. The KB184 piston has a .140 pop-up so it can be custom fit to the depth of the chambers on your 452 heads to give you the preferred .040 piston to head clearance. Hughes Engines has some short duration cams with a decent amount of lift to give you plenty of bottom end.