I have a 2004 Chevy 6.0L LQ4 engine for sale. 30K miles, carfax confirmed. Complete all accessories. Drive by wire setup. Fully functional and tested. I reworked the harness making it a turnkey EASY to install labeled 5 wire hookup.. and flashed the computer with a performance tune and got rid of some torque management. If you're serious PM me and we can get a video clip of the engine running on the test stand. Asking $4000 plus shipping Or best resonable offer.