Hi there everyone. I am the proud new owner of a 2003 KJ with the 3.7L V6, and a 5 speed manual. This car did not come with the factory towing package, however it has a uHaul 2 inch hitch with what appears to be a 4-pin harness attached to it. I presume it is a class 3 hitch due to the harness and the size of the hitch but I don't know how to confirm that. The manual and some light internet research tells me that this car as-is should have a towing capacity of 3,500 lbs. I would like to increase that a bit so I could tow a small RV. I think closer to 4,500-5,000 lbs would be ideal. I recently nabbed the HD trailer towing package parts (Electric fan, fan shroud, mechanical fan, fan clutch) from a junkyard and was going to have them installed next time I take the liberty to a shop. - Will this HD cooling package be enough to provide enough transmission cooling to effectively increase my tow rating? - Would the 5 speed manual be able to handle higher loads even with the improved cooling system? - Would I need an auxillary transmission cooler, or heavier duty OME springs as well? - Is there a way to verify the specs of my uHaul hitch? (I suppose I could just go to a uHaul and ask them) - Am I an idiot for thinking any of this would work?