I desperately wanted to t56 swap it. but I could only find 100,000+ mile t56's for more than the built th400 and new t56 for over 3 grand. I figured at that point I'de be better off to buy a new built th400 for 1400 bucks from summit. Slap a 200$ 3k summit stall in it. And with a fairly large trans cooler I managed to get from work built for a freightliner. It will long outlast the 170+ thousand mile engine in there. You are right though despite everything I'm doing to the truck. I AM taking all the fun and sport out of driving.