This kit comes with Forged crank, Forged probe pistons, Forged H beam rods, CL77 bearings, Race Rings. This kit will give you 9.5:1 CR with 61cc heads. This kit uses the 6.200 rod instead of the standard 6.125 rod. This kit can handle up to 800HP. We have many 351W stroker kits. Call us today with questions on this kit, 623-435-0166.