I'd get a yota 5 speed from a 88 to 93 model truck. They were avalible. You could also swap to a Yota rear. They were avalible with several different gear sets and the center chunk is interchangeable. You can even get custom gears through Downey off road. There is not much avalible for the factory rear though.
I loved my 22r I had shaved head, port and polish, cam, header and weber on my 86 Yota. 88-93 tranny is a good choice, My 86 4wd was geared good, almost a little on the high side when I put 32s under it
yes i bought this cab plus mainly because it already had the 22r in it...with only 80k on the original engine, saved me alot of trouble seeing as tho i was gonna put a 22r in whatever i bought anyways..