motor mounts are the same, I have the 3.9 ones on my 5.2. There is really no "re-wiring" just unplug the old harness and computer, stick in the new one and your on the road.
With the 5 speed I would more be worried if the flywheel is the same, is the v6 clutch the same as the 8?
Other then that theres really nothing to worry about. I had to get longer heater hoses, if your keeping the stock fan youll have to trim the shroud. Your v6 rad will be fine.
I garentee if you start friday night you can drive it monday to work
With the 5 speed I would more be worried if the flywheel is the same, is the v6 clutch the same as the 8?
Other then that theres really nothing to worry about. I had to get longer heater hoses, if your keeping the stock fan youll have to trim the shroud. Your v6 rad will be fine.
I garentee if you start friday night you can drive it monday to work