Truck Suspenion - Spring Helper?
My 2001 Dodge Dakota quadcab sags at the rear when I tow a trailer with heavy tonge weight or carry a heavy cargo on the bed.
There are 2 types of spring helpers I found - (1). Metal leaf spring helper, another piece on the top of the existing set of leaf springs. (2). Air Filled Bag type (Firestone makes).
The cost is about the same, $250. The installation difficulty level is about the same. Which one do you think is more effective in terms of performance?