i have the 5.2 in my truck now and i just got a 5.9 and i wana switch them out but idk if any of the mounts or anything are different, or anything else that has to change to from going from one to the other.

 

just did this same swap............still doing it seems like. Tranny and motor mounts are the same. Will need some new parts like harmonic balancer, flexplate (assuming auto trans) and computer. All the wiring is the same and your intake will swap over as well.