[dozerbill72]

Check that your new bed is sitting cleanly on the frame, that there are no old bolts or pieces of the old cross sills holing the bed up. I have all the pieces in the early stages of the same project as you. My 8' foot steel floor bed sets cleanly on the Longhorn frame but is 5"ish short at the front. You are correct that the extensions are roughly 8" long and that you would have to cut the front off the new bed. The Longhorn bed are 8'6" but it's a combination of the extensions and shorter bedsides. I was under the impression that all Longhorns had wood floors. With that being said I haven't got to the part of seeing how the front header from the steel floor fits up to the wood floor extensions. You will have to fill the front of the floor with something, I was going to try to cut my front cross sill and floor loose and just move it forward than fill the gap. Good luck and share some pics of your progress. It sounds like your moving faster on yours than I am.