I took my car to a local mechanic, the guy I take my car to for most of my maintenance, and he charged me 1100 for installation of heads and a cam. the hard part of a top swap is the harmonic balancer remove and install. installing the heads and supercharger would be the easy part, just time consuming. doing a top swap would be an easy way to make 300 hp at the wheels with a cam and a light port job on the heads.