[Captainfab]

Converting a 2wd to 4wd is not a small project no matter which way you go. But some methods are much easier than others. I always recommend keeping your original frame if at all possible. It is much better to have your cab and the frame with the same VIN number, for legal reasons. Now if you can find a '63-'72 K series frame, with a title or what ever paperwork needed to make the swap legal in your state, that will help some. What you do not want to do is get a '73-'87 frame and put your body on that frame. That is WAY too much work IMO. What I would do is find a '73-'87 K series truck and use all the suspension and running gear under your '63 frame. Like I said, it is not going to be a small project, but IMO that is the best way to go.