I have one of these, and the frame was unique to that truck (as far as trucks with beds go). It's basically a shortened version of a stake bed/cab and chassis frame from the same era. It is pure beef and significantly stronger than an F250 or similar. It's 9" tall under the cab, and roughly 1/4" thick, which is utterly ridiculous if you think about it.
Ever seen the special camper they made for that truck? it is also, utterly ridiculous.
