Little more clarification on the t case please. No such thing as a 232.
231 I would be interested.
Depends on what your 4x4 shifter says. It's one of these 2.
NP231 - "Command-Trac" part-time only - 2.72:1 ratio low range - shift pattern 2H - 4H - N - 4L - used 87-01
NP242 - "Selec-Trac" part-time OR full-time - 2.72:1 ratio low range - shift pattern 2wd - 4part-time - 4full-time - N - 4LO - used 87-01