Any 22r(e) manual 4x4 transmission will bolt up, including the turbo 5-spd(R151). The W56 series are generally considered to be stronger than than the G(better bearings), and the turbo has a lower 1st gear.

For all the info you need on the transmissions, check out Marlin Crawler and Marlin Trans Tech

More than tread lightly. Leave it like you were never there, nor anyone else.
'90 X-cab 4.88's 33 BFG AT's, rr ARB, Headers, Ignition upgrade, cold air induction.
'91 X-cab 5.29's 315's BFG MT's, rr ARB, custom bumper and flatbed