5.9 Cummins Diesel Towing capacity

We know nothing about the OP's truck except it is chipped and the transmission is rebuilt. What if it is heavily optioned which adds weight? What if it has an aftermarket front bumper with winch or heavy running boards? What if he has an auxiliary fuel tank in the bed or he has a penchant for taking firewood. Worse yet, what if he is hauling precious cargo; namely 3 children in the back seat?

I don't think it is prudent to recommend someone to overload their truck by possibly up to 3,000 pounds because they have done so in the past. I won't do it. The OP should consider a lighter trailer.