Thanks guys, I was looking at the Hellwig sway bar, and I will need new shocks because everything is still 100% stock except for the Cold Air. The empty weight of the trailer is about 3,555 lbs, so filled with trash the whole thing would weigh about a total of 12K? I have a brake controller. I was thinking of using these springs:2001 Ford Excursion Skyjacker Add A Leaf Springs, Skyjacker Truck Leaf Springs
Thanks Again guys!