lq4 with valve relief on the left (im assuming DOD) and a LQ9 flattop with gen 4 rod on the right. Im actualy gonna replace the dished pistons for flat ls2/lq9 pistons. this will keep my compression at 10.1 w9th 317heads and keep low rpm/no boost tq up while also utilizing the better flow of 317 heads. the floating pins make swapping a lot easier