I want to re-mount the spare on my 50 3600 to the original location under the bed. The curved top portion that's bolted to the cross members is still there. I've only found references/retailers for a 3100 mount. Since I've not seen one mounted, I just don't know if they would interchange. Yes, I could do the side mount but I like the way the truck looks without it and want it to be original. Thx---DWG
