Ok, so I have done a couple of searches and I can't seem to find anything that talks about how they mounted the bed. i came across one on another site but it wasn't very helpfull. I wanted to see if anyone has any pictures of how they did it. Thanks guys.
Mine is mounted by wood blocks that are cut to aligning lengths and long bolts through the wood into the frame. I dont have any pics, sorry.
Check this out. http://www.mar-k.com/bed_mounting_information.pdf Also they have lots of cool stuff for truck beds on their site. http://www.mar-k.com/index.html
Hey - we've got some pics over at the S-10 frame swap page... and drawings you can make your own off of. They're specific to the swap, but can be modded a little to fit the stock locations. http://www.jalopyjournal.com/forum/showthread.php?t=274702 There are also pics of cutaways. ~Jason