simple Weeds - they build up the body on top of the ply, then
drop the whole assembly on a completed chassis !!
the ply floor has to go in from the bottom unless you wanna put it in split front to back, which I didn't - I replaced the wood in my 57 panel [the 37 millionth Chev truck?] by the correct process - lift the body, cut/remove bolts, stand back when floor drops out, grind heads off cross sill bolts, use old floor for pattern, reverse process using new hardware - not too hard, but intimidating to hafta lift the body
Bill
