Bought the unit in march put about 1200 miles on it .. Never had a failure but send back for a possible noise problem in my Truck i could not find.. Unit was Shipped back to me last Sat and I have 4 1/4 hits on it .... My truck is 4800lbs... 4l80 3.73 gears and 28" tire.... it will Footbrake 3000 it will Trans brake 3600 Drives decent and Tons of Throttle Response !!!! Paid 900.00 take 700.00 Shipped to your Door