The only thing you need to worry
about is that the front and rear
gear ratios are the same, or you
will lunch somthing in 4WD
The 3rd member is the center part
that the driveshaft connects to, and
has the nuts going around it, this
holds the ring and pinion gears, the
spider gears, (which get replaced with
a locker), or in the case of an ARB the
carrier which is what the ring gear is
bolted onto
Wild