Whoa....slow down folks....slow down...
First off if 2wd frame, depending on the axle of choice he may have to cut off spring mounts but maybe not..
Lets see first what the OP wants to do and what his budget is.
If he gets I believe an 05 up superduty front diff and radius arms, he can swap in a front diff and have a coil sprung front end. Then get the rear to match so his wheels are all the same Metric 8x170 IIRC.
As for transmission/tcase there are two routes to take.
1 locate a divorced mount transfer case like an early Ford NP205 make a short shaft from current trans to the Tcase and then drive shafts from there to rear and front.
2 locate a complete 4wd trans/tcase combination and subsequent driveshafts.
another option..
Locate a 4wd truck same as yours, with shot body and do a body swap...
Hard to say what to do..lets get some feed back from the OP...skill level budget etc.
JM2CW
Al