Bronco top interchangeability
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...."; AlM
NOTE; 92-96 have rear seat shoulder belt mounting points & 3rd brake lights.
Swap, between 78-79 & 80-96; "...NO, the 78-79 has a curved seam line going across the top and the 80-96 seam line is straight..." by Trent R
Swap, between 78-79, 80-91, 92-96; "...There are very few differences between the 80-91 and 92-96 tops. Some alignment pins is what it boils down to I think..."by Dobs
The guy selling it doesn't know exactly what year it is, just "80's".
The 80 - 91 tops have a pin in the body that lines up with a slot/hole in the shell.
The 92 - 96 tops have a pin in the shell that lines up with a hole in the body.
This just keeps you from swapping an older shell onto a newer Bronco because it is federally illegal to remove a shoulder strap belt and third brake light from a vehicle equipped with them.
But, If you put a 92+ shell on an 91 and prior Bronco, neither will have the alignment pin and you shouldn't have any issues.
Strictly speaking, if you are dealing with the removal of a 4th Gen. top with the original hardware still installed, you need the Tamper=proof T-40 Torx driver to remove it. Any top prior to 1992 should still have hex-head hardware holding it down.
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