I have the perfect donor for your Jeep LS swap. Its an 04 LQ4 6.0L truck engine (was told around 60,000 miles on it), but comes with an LS1 intake with aftermarket fuel rails and already has F-Body accessories installed. Water pump, alternator, PS pump, etc are all new. It comes with a freshened up 4L60 with a NP231/NP241 adapter already installed. Not only that, It comes with a drive by cable setup (so no need to figure out pedal mounting) and a brand new Howell engine harness and new computer that has already been flashed.
This is as complete as you can get. Literally just add the exhaust of your choice, hook up 4 or 5 wires, and you're good to go. Lots of extra parts included with this, but I don't have time to list every little thing.
The engine alone at a junkyard would be around $1500 plus tax, I've bought 2 of them so I know. The trans is about $900, and this one has been gone through. The t-case adapter is $700... parts and labor to install and freshen trans was $500. The harness from Howell; $800, and the PCM; $350. So if you add all that up, its $4700. I need to move this stuff so $4500 takes it.
I can be reached at 423- six one nine -4085.