I recently purchased a 24 ft Haulmark enclosed trailer that will be carrying a ITA Nissan 240sx. I am guessing the trailer will weigh 6500lbs - 7000 lbs fully loaded. I will be pulling the trailer with a 1999 Ford Expedition 5.4L SUV. Included with the purchase was a Curt Trunion Style weight distribution hitch and a Curt sway bar control that were not hooked up. My questions are should I hook up one or the other, or both. I will be towing in Florida only and the furthest tow would be 200 miles. I will mostly be towing to Sebring (90m miles) and Daytona (50 miles). The Expedition does have the self leveling option. Any feed back on how either of these products improves the rise will be appreciated.