[youngvr4]

your fine with the 1st gen, whatever you can do with the 2nd gen you can do with the first.
unless you plan on adding some huge power, like 150hp+

1st gen have 2 bolt, and 2nd gen have 4

but its still workable

Essentially, the following internals were changed mid 93:
93.5 has 4 bolt main, 91-93.5 had 2 bolt main (although it doesn't really matter unless you plan on modding the hell out of it).
93 has forged connecting rods, 91-92 does not
93 has forged crankshaft, 91-92 does not
93 has forged steel inserts inside cast aluminum pistons, 91-92 does not
93 has forged steal 25 spline output shaft, 91-92 have a cast 18 spline.
93 has stronger internals in the transfer case, and is a different design than earlier ones