i guess where i would start it trying to find the specs on magnum heads used in 360's and 318's....i think dodge actually shit-canned the 360 in favor of the hemi....345hp it says ...feels like 200hp (mudrat dont be mad ) I have the specs on AMC heads so i can go from there but i dont have the specs on 318 heads so i dont know how to make an adaptor,,..they are very very close though i do know that..I may be able to scrore a engine this weekend, but all my stands are taken up by AMC V8's at the moment..Look for specs if oyu can