I was unsuccesful in finding that boot as well, the little donut shaped one that goes on to the tranny itself?
Try an inner tube from a dirt bike or larger, cut a circle out of a flat peice and punch a hole in the center, slip it over the shifter and secure it to the tranny with a zip tie or the origional wire clip if you still have it.
1982 cj7. Frame off. shell valley kevlar body, stainless hinges, Bestop seats and supertop, KC titanium lights, Homemade swing out tire carrier with spare front wheel bearings/hub, Built 304,DUI,Edelbrock shorty headers with dual stainless 21/2 tubes into incynerator cans 21/4 dumped out the back,Edelbrock 600cfm, performer intake and cam, Borgeson lower column, Centerforce clutch, NV-4500, Dana 300 w/custom built twin stick, Homade 1/4" steel skid plate, 2.5 soft ride w/ 1" shackle lift, 33x12.5 mtr's. Stainless fuel and brake lines, Braided hoses. more...