There is no differance between your Hemi into a Ram 4.7 and my Hemi to a Dakota 4.7. Everything is the same"Even the wiring harness".Nothing is plug and play just because it's a Ram 1500 instead of a Dakota.
The only thing that "MIGHT" be differant would be the cross member being in the way.When you get the motor Also get the Tranny, wiring harnesses,Computers,foot peddles,and exhaust all the way back to the mufflers,youll need the oxygen sencers.Read my thread,and pictures"Dakota Hemi Swap".Look to do almost everything the same way.There's another way to hook up the motor mounts without having to cut the purches off the frame,by using the Hemi Motor mounts ,I didn't have the Hemi mounts for mine so I had to use a steel plate.But nothing is going to match.It's not a motor swap,It's a "Customize your truck to except a Hemi swap"..