Whatever brand of trans fluid you go with, make sure it is a synthetic comparable with the Mopar ZF 8 & 9 speed (NOT ATF+4), and use a good quality trans filter. I believe the diffs call for 75W90 (check your manual), and I'd look for a good quality synthetic.
Just note that when changing the trans fluid on either the older NAG1 5 speeds, or the newer 8 speed ZFs, there is NO trans dipstick. You will need to get one (Amazon, Mancini Racing, and others sell them), PLUS go by a trans fluid temp chart (Google it) and have a means to read your trans fluid temps (scan tool, OBDII reader) to insure correct levels. Diffs are usually pretty straight forward - fill to bottom of fill hole.