After studying their drawing, I gotta say thats not an easy bolt on. How do you drill that top bolt hole? Will a cutoff wheel or grinder fit in there? Can you manuever a mig torch around there? Considering that you have to do all that prep, then drilling or welding twice, in a small area, I'd probably beg a neighbor to help me remove the bed. That way, I can also clean & recoat the frame and check everything for rust.