360 heads on a 318 of any benefit?

I wouldnt touch either set. the 360 heads will lose you some compression because the chambers are larger. Plus, the ports on the 360 are larger. I would just leave the 318 heads, run a 318/360 Performer (not rpm), and run the summit brand smaller cam. It's made by Crane for Summit Racing, and it is cheap. MP cams are not wrth the time IMO unless you can and plan to degree it upon installation..