Try to find a R/T Durango if you're gonna get one at all. 3.92 gears, awd, tow package, f/r swaybars, 1" drop with sport susp., 17" wheels big wide tires, beefed up 5.9 (+10 hp an +15 tq), f/r discs., not to mention the interior and ext. extras.
I recently towed my j10 on a full size car hauler. It performed great. nice acceleration, handling, and braking. Not near as nice as my dads 3/4 ton dodge, but it was only an 1/8th the price. I love the durango now.