Ya I initially installed the fel yet even after a torque I can still slide a feeler in. I know with some heat and such they should be ok yet there are so many great header gaskets for v8's these days I figured someone might be putting out something great that I wont have to double gasket. I see a few different ones offered at Jegs and headman makes a set, figured someone can give me a thumbs up on one.. I am a big block guy and in building this apache I wanted to go different and I just wont own a small block.. Basicly because everyone has one.. So if its not big block its going to be inline for me.