Well that stinks that it is not a 67-72 frame. I guess this still could be done with enough time but making good custom body mounts and stuff would be to much for me I think. I am still trying to get an exact price on stuff and if it is cheap enough I might still get it for the parts. I did find a couple other things to think about today though. 68swb 2 wheel drive and a 71 swb 2 wheel drive. I found the 68 about 15 miles from my house and stopped and talked to the guy about it. He said it was his first truck and he has been thinking about selling but his asking price is more than what I see them selling for around here. The71 is on this craigslist add.
http://oklahomacity.craigslist.org/cto/922149955.html
Here is the 68 (I have been playing with the last picture in photoshop)...