Hey guys, I found this article doing some research on ATS. This guy took his truck to ATS and had them do everything in house. It's a dodge 48re behind a cummins, but it'll pretty much be the same result for our psd trannies. It explains how it works, and has step by step pictures and info on the removal and reinstall. Then at the end he says how it performs. I'm pretty impressed just with what I read, now I want one!!! Here's the link....
http://www.pirate4x4.com/productreviews/ats/tranny/