I may be very late chiming in here but as of Thursday (7/20/17) my stock trans finally gave up the ghost around 600rwhp. Granted like 6.0Tech said, my truck has been through abuse....burnouts, donuts, drag racing, sled pulls, you name it I've probably done it. It all depends how you drive I...
I bought this from another forum member and have since decided to go with a 400 series turbo charger. Interested in trans or cash (PayPal)
Turbo has a T4 .91ar turbine housing as well. Turbo has never been ran at all. If you're interested please let me know. I will try and post pics below...