lol as always like the rest of us i cant leave a good ranger alone i gotta tinker with it. my boss frank gave me an idea for more horsepower out of my 4.0. i work at pull a part in columbia sc an frank has the only supercharged(homebuilt....everything) montero sport in the united states so he knows his stuff im begging him to help me build a prerunner ranger lol. i was thinking the later years v-6 mustangs have 4.0 engines anybody know if the heads would fit on a 2001 4.0 ranger block? im looking for quite a bit more horsepower without using any turbos ect.