The first link didn't work but I saw it through your sig link. Interesting bed system! I'd make a welding trailer out of it, too.
By the way, I have a bed SIMILAR to the one in Sly's album but not exactly the same. It is from a 54 3/4 ton though. I like the ribbing around the sides. I think mine has seperate corner pieces and all riveted together. I haven't messed with it in years, just move it around!!
