I am rebuilding a 350 motor to put a Weiand 142 roots blower on top of. It is a 1987 engine, but to use this supercharger, I need the older bolt pattern. No big deal. I would just like to know if it would be worth getting a pair of edelbrock aluminum performer heads over using the stock heads off of a 305, which have the desired bolt pattern, if those would even work, and if they would work well.