Bought a set of head gaskets that were supposed to be for a 302. The box is labled F3ZZ-6051-C but the gasket itself is labled F47E-6051-A5A. I tried putting in on my block and the bores on the block are spaced further apart than the bores on the gasket. Anyone know what these gaskets belong on? I have searched and cant find any info. Here is a pic.