125k on my 06 mega auto. It has had aftermarket fuel filtration on it since it had 30k on it. Made 499hp at the rear wheels for 40k on the stock trans and it never missed a beat (ran mid 13s at the time at just under 8k lbs). Pump seal started leaking so it got upgrade with billet stuff. Water pump died at 80k and evap went at 100k. My biggest complaint is the crappy cloth seats and the a/c in the megacabs needs help.