Found a great deal on some s/r torquer heads for a late model engine so they are the center bolt type I bought them and got a holley street dominator manifold for that style of heads. When I put the manifold in place, it would not seat properly with gaskets on. By not seating properly I mean that it has about a 1/8" to 1/4" hole between the bottom of the manifold and the top of the block. So I took the gasket out and set the manifold on with out gasket and it still sits about 1/16" to 1/8" off the block. If any can give me any suggestion they would be gretly appreciated.