and abused - seriously they are out of a 360 using stock springs with 484 lift resulting in coil bind. The rotators had not been removed and a longer spring used either. After measuring the with a longer regular non rotator spring it would have been real touch and go anyway but the rotators were the straw that broke the camels back. It also cost a sleeve, head, cam, a couple of rods and a crank that could be salvaged surprisingly with a .010 cut.