yo MB,
My bad! Didn't sleep well so I had a brain freeze;
on the Camper top;
Swap, between 66-77, 78-79, 80-91, 92-96;
"...78-79 fiberglass with integral steel roll bar inside rear lip; sliding or fixed side windows;
80-91 fiberglass with integral steel roll bar inside rear lip; sliding (up to 83) or fixed side windows; 92-96 fiberglass with integral steel roll bar inside rear lip attached to mounting plate & alignment pin; fixed side windows; The only groups that you can interchange are 80-96 with some modifications.
80-83 sliding side windows directly fit 80-96 shells.
78-91 Broncos use 4 short bolts (8mm head, 6x1.00x40mm) on each bedrail & 5 long bolts (8mm head, 6x1.00x70mm) in the upper sections. All bolts thread into U-nuts, except the 2 upper corners & the 2 rear corners which use captive nut plates. The bedrail bolts each use a clip stamped "L" or "R", but the rearmost bolts use the opposite clip. The clips for the B-pillar bolts are not marked, but the smaller tab goes down.
92-96 Broncos use 5 short bolts (tamper T-40 head, 8x1.25x30mm) on each bedrail & 5 long bolts (tamper T-40 head, 8x1.25x60mm) in the upper sections. All bolts thread into U-nuts, except the 2 upper corners & the 4 rear corners which use captive nut plates. The bedrail bolts each use a clip stamped "L" or "R", except the rearmost bolts. The clips for the B-pillar bolts are not marked, but the smaller tab goes down. There are also nut plates in 4 of the camper shell bolt holes: the 2 rearmost, and the 2 outboard at the top of the cab. They're just a heavy plate (1/4"?) with a threaded hole...."; miesk5 NOTE; 92-96 have rear seat shoulder belt mounting points & 3rd brake lights
Source: by Steve @
http://broncozone.com/forums/index.php?showtopic=14266&st=0&gopid=93289&&do=findComment&comment=93289