I want to buy a toy hauler but the only thing I can pull it with is my Jimmy. There is a 21 footer I really have my eye on but the thing weighs 6000 pounds dry. When I put my quads, water, and gas in it, it will be more like 7500 pounds. So what is the most I can tow with my Jimmy? It is a 5.7 with the 3.73 gears and factory towing package with oil cooler and extra trans cooler on the front of the radiator. It has 33x12.5x15 BFG A/T's on it. and it is the 700r4 trans. I have done a KN filter, high flow cat, and a flowmaster delta flow 50 series muffler.