Pull the case, there is only 1 bolt that is hard to get, and it's at the top
of the case, under the trans shift casting, leave it out when you put
the case back in.
You need to use a pin punch to get the shifter ball socket on the high/low
shaft off, and there are pins and springs in the shifter housing (t-case) that
need to be removed, as well as the tail section needs to come off to remove
the high/low shaft to remove the interlock ball.
This all sounds complicated, it really isn't but to do this in the truck would be
a PITA and you will end up removing it anyway, save the trouble and do it
first round
Wild