So i have a 08 yukon on 24s...i really want to drop the back but i have one concern. I am towing a boat all summer, when the boat is on the car, my rear end drops about 2 and a half inches. If i add the 2" drop that will bring me down to a total of 4 and a half inches or so, would that be an issue? and also would the drop be able to handle the weight?