I do personally prefer Firestone air springs over Air Lift, but for your specific vehicle the Firestone kit available will limit your compatibility with in-bed hitches. I recommend going with the Air Lift LoadLifter 5000 Air Helper Springs # AL57288 so that you'll still be able to install and/or use an in-bed hitch. These springs have a 5,000lb capacity to help offset suspension sag and keep your ride height level.
If you plan on hauling different loads regularly and need to adjust your... view full answer...