FWIW
I have read in the past that the 93 and up clutches are a little larger. There is more contact surface area on the flywheel for it. Supposedly, you can replace your older (smaller surface area) flywheel with this larger area one as an "upgrade" for a little more clamping force with the later model clutch disk.

85 4Runner - With NEW Marlin 4.7 Gears!! It's a whole new beast!