I have the opportunity to purchase 2 cylinder heads off a 302 Boss crate engine M-6007-X302B along with the cam from a friend at work for $900.00. The heads are the Ford Racing aluminium GT-40 M-6049-X306 along with the roller rocker arms. The cam is a hydraulic roller M-6250-B303. He just purchased the engine & wants to run a supercharger & wants to go with better heads & cam. Comments, suggestions?