Don't think a light weight aluminum bed is going to be necessary, maybe a full bodied flat bed? Still takes two old guys and a small boy to move this things around!
Started a new thread for
"Best Way" Spring Hanger Mounting? in the All 4x4 Tech & Off Roading section. Ran a search and didn't find a lot on the subject.
http://67-72chevytrucks.com/vboard/s...=1#post7204790