This from a guy who rags on the reliablity of DSMs.
I blew a water pump in my 90 AWD, wore out my clutch master and slave cyl with the ACT 2600. Pulled 1.8s at the track on the original 150k tranny, CVs, t-case, and rear-end without incident. I had a ripped CV boot on one of the front shafts for over 10k, it never even clicked.
Busted a few quadratrac t-cases in the 78 CJ7, the TH400 never blinked.
Smoked the TPS on my current daily (01 Jeep Cherokee), that’s about the mechanically related part that’s failed on it.