I have searched for this info and cannot find it in the archives. I can't seem to find it on any site to include Langdon's Stovebolt site. I think it could be an error, but I hope not. While reading the Dec 05 issue of Classic Trucks magazine (page 24), I came accross info that led me to believe that I could swap the third member from a 55' open driveline truck into a 52 truck closed driveline rearend housing. My initial look under the truck (without scraping off grease and mud)reveals that it might just be possible. I've always read that there was no swapping except for the 3/4 ton. Anybody know for sure?