... mounts (part # 40-2002). There is something screwy with the parts listing, because the 1980-1986 rear lower cushions (part # 40-2008) do not fit the upper cushions. You can see below that the 40-2009 lower cushion has the recess for the upper cushion to fit into.
And below, the 40-2008 lower...
Figured I'd note the mistake in the LMC listing in case anybody goes searching for cab mount information. Might save you some of the trouble I went through getting this sorted out.
The issue is the rear lower cushion, item #23. See black arrow below:
For some reason LMC has part number 40...
... work (I did modify them so that they would work, but whatever...).
On top of that, I just helped a guy on Facebook that found out the hard way (like I did) that LMC's listing for the rear cab mount lower bushing is incorrect. The part number they list 40-2008 does not fit...you have to order 40-2009...