Hi, i have a 2013 dodge ram 1500 4.7 with a blown head gasket and found a 5.7 hemi engine 2013 for cheaper than it cost to fix the head gasket. Made a lot of reasearch to know if it is possible to swap it but didnt find anything about 4th gen. The hemi comes with the Comp/trans/trans crossmember/starter/alternator/ac pump/ the wiring harness has one section cut off it for battery connect/headlights/etc. The guy claim that my 4.7 harness will cross over for that. And the upper half engine motor mounts are still attached. What else would i need to make it run ?