There was a series in one of the four-wheel-drive magazines a couple years ago on what it takes to convert a two-wheel to four-wheel.

My neighbor used to have a '73 pickup sitting on a '72 four-by frame. I didn't see it built but was there to watch the body come off the frame. In that case most the brackets looked stock, but I don't know if they were moved from a '73 or if the body fit the '72 brackets.

The two-wheel front suspension was basically the same from '63 to '87, so you might find that a frame built before '88 an easier swap.

'88 is the first year for IFS on GM four-wheel-drive. I haven't been under a short-box that I remember, but I own a '89 long-box extended cab four-by and it has a very flat frame between about the fire wall and the rear spring mounts.

I'd think it could be done and might be real successful. But I've not seen it done.

1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble...