I'd start the search with salvage yards. If you have time to wait, that will be the best way to locate one for the least amount of money. I believe the L92s are only in the 2007 vehicles, could be wrong though. I'd get the complete engine/trans/harness/pcm and as much of the rest of the truck that they'd throw in with it. If you know people in the salvage or insurance business they can let you know if one is going to auction. You can buy the whole truck and then sell off the remains after you strip out what you want.