1994 F150 5.0 engine swap.
 

My mom got a Jeep and I got her mountaineer with the 5.0 and 4r70w. My truck has the 5.0 and 4r70w which recently gave up to the ghost and I want the 5.0 with more power. Tell me what I need. I know it's possible

You'll need to remove almost all the wiring from the fronts of both trucks, and the computers, and the exhausts. Then you might need to do some fabrication to mount the electric fan(s), and/or re-plumb the fuel system to returnless. Then drop all the newer stuff into the older truck, and drive.