Here is a set of heads, matching intake, valley pan and cam (if you want it) from a PSI 8.8L GM based Gen 7 big block. I bought an engine for the block and have no need for these units, rectangle port and compatible only with the manifold type that you see in the pictures. Might trade for SBC (good 906 heads )and BBC parts, tall deck parts, medium duty truck parts, square body bench seat, etc etc.