Here's FABTECH's 2005 Jeep WK 3” Performance System
"This system features our Dirt Logic 2.50 Coilover Shock replacing the factory strut assembly for increased ride height and greater dampening capability. The Dirt Logic 2.5 has been designed to utilize the OE lower mount with a billet upper mounting plate. Rear lift is accomplished with coil spring spacers."
It's so similar to the KJ that you would think that they'd make the necessary modifications to be able to market the lift for both vehicles, thus increasing sales? I believe they're even adjustable. WTFO?!
Oh, and the price is only $550! Add other after market rear coils ($130+/-) and extended shocks ($100+/-) and the total would be somewhere in the neighborhood of $780. Not bad!