I have an extra shifter and shifter base from a W56B, that's the top-shift transfercase style from 86 to 88. It's in working condition, with a knob (no gear pattern placard), and the shifter ball seat and shifter lever socket are gone. Luckily Marlin sells them! I can email you pictures if you want to see what I've got.
$30 If you want it, I'm in west San Jose. Text me 650 463 6267.
-Augustus