I recently purchased a 30 foot travel trailer from my neighbor. It says it weighs 4522. I own a 2003 Durango with a GVWR of 6400, GAWR (rear) 3850, (front)3600. I believe I have the class IV towing package with a tow rating of 7500. (I have the receiver hitch with the 7 pin outlet.) Now i have been combing the web trying to figure out one question with no clear answers in sight. (I am just completely confused with all the numbers and abbreviations). Am I going to be able to pull the trailer with my Durango and if so, are there any other add ons I need to purchase? Any help would be greatly appreciated. Thanks in advance. ( By the way, the engine in my Durango is the 5.9 V8 Magnum...not sure if that matters, just thought I'd throw that out there.)