[manimal]

From what I have read and understood,you need to remove the front radiator support bracket from both trucks and swap them...the 4wd also has the front spring hanger built in...BOLT them back in. you will have to do some measuring for the rear(front spring) shackle location,drill/cut the hole and mount the bracket. Then you need to address the front crossmember. If your truck has the "HIGH" hump in the floor,you shouldn't need to mess with that. You will also need the front/rear drive shaft,transfer case/transmission crossmember. Since the donor is extra long,you'll need to shorten the rear driveshaft. I think you also have to change the rear spring hangers too.
If you have the time,then it wont be that bad.