[New Ford Guy]

I have a 1991 F150 300 six 5 spd 2x4 that I want to convert to 4x4. The truck is rust free and has only 38,000 original miles.

It looks as if I can just bolt in a front differential, transfer case & drive shafts from another F150 to make this a 4x4. I have a rusted out 4x4 with a bad frame with the parts I need.

Any advice on any problems I might encounter along the way? Is the steering linkage the same with 2x4 & 4x4? Do the gears in the front differential need to match the rear gears?

I know it will be a major undertaking but I really want to do this if it can be done.

Your suggestions on what I might encounter would be appreciated.