Re: RB3 Radio in WJ ?
You can install the RB-3 headunit in any WJ jeep. Physically it is plug and play, connect wise it is different though.
You'll need to buy a adapter to convert your two inputs into one, google or ebay it. On top of that you'll need a 10-pin CD changer cable, which you'd be able to pick up from a dealer.
wjjeeps.com covers the instructions on removing and reinstalling all the interior trim pieces for the install and placement of GPS antenna (behind instrument cluster IIRC).
"Even though I walk through the valley of the shadow of rice, I will fear no turbo for thou torque art with me. Thy rods and crankshaft, they comfort me."