1992 5.0l v8
 

i have a 1992 ford 5.0l v8 and its in a ford flareside. i was wondering how hard it would be to replace a blown head gasket and should i buy the whole set of gaskets for 30 dollars more or just buy the gasket itsself? also what are some small mods i can do to make it a little bit faster for cheap? im putting headers and exhaust on it too.

thanks and please help
jacob