Sorry for the semi-off topic post, however I need a point in the right direction.

Towing with a 2004 Chevy Tahoe LT, with the new 20' enclosed, the rear is sagging a bit more than I'm comfortable with. The car has ~65,000 miles, I was fine when I had the 16' open, but now am looking for a solution. I'm naturally not a big truck guy, so what can I do to help?

 

After wasting time and money screwing with springs myself I would bring it to a truck spring shop.They will get it right on the first shot.