Now, I know there are some that have had problems with Rusty's in the past and I am not endorsing then beyond the fact that I have never had problems dealing with them and that they are close enough to me that shipping has always been really cheap. Caveat emptor...
They have recently updated their site and now appear to be an ARB vendor
Here is what I have found of interest --
Chrysler 8.25 Ring and Pinion Set (4.10) - $199
http://rustysoffroad.com/mm5/merchant.m ... y_Code=RIN
Chrysler 8.25 Ring and Pinion Set (4.56) - $199
http://rustysoffroad.com/mm5/merchant.m ... y_Code=RIN
Lock-Right Locker - Chrysler 8.25 - $290
http://rustysoffroad.com/mm5/merchant.m ... y_Code=LOC
ARB Air Locker - Chrysler 8.25 - $799
http://rustysoffroad.com/mm5/merchant.m ... y_Code=LOC
(none of the above specify 27 or 29 spline so I would not assume that they are for the KJ and not the XJ -- i.e., ASK before ordering!!!)
ARB KJ ('02-'04) Winch Bull Bars - $760
http://rustysoffroad.com/mm5/merchant.m ... de=bum_arb
Superwinch LP8500 Winch - $399
http://rustysoffroad.com/mm5/merchant.m ... ry_Code=sw
Optima Yellow Top Battery - $189
http://rustysoffroad.com/mm5/merchant.m ... y_Code=OPT