head gasket

http://www.summitracing.com/parts/fel-8519pt1/overview/

Them would be the one that came in my kit. After looking it seems they have a compressed thickness of .039. I come up with 9.4 to 1 with them and 9.78 to 1 with the others. So about .4 tenths of compression loss.


Also this kit came with exhaust gaskets... Are header and manifold gaskets the same. Could I use these i have in the kit?