I went w/ the ARB as they told me that the RD23 will work w/ the 4th gens. We'll see if it really works or not when it gets installed (I'm pretty confident it will).

Front lockers aren't available yet and I have no clue on when ARB will get the ball rolling on that one. I've also contacted Precision Gear on making some gears for the 4th gen but that looks grim as well (as they just gave me the brush off "maybe in a year or two".)

TJ's Offroad seems to be the place to goto as some of the TTORA guys have told me great stuff about their installs. Hopefully everything will work out well