I've got a Vagabond Adventures "Drifter" camper on my 6ft bed. Between that, the 270 awning, solar panels, cabinet build, domestic cooler, gear, etc I've got an extra 700 lbs on the truck. My stock leafs were definitely not cutting it. Once my warranty comes up I'll move to replace the entire leaf pack with Deaver or OME and do suspension work on the front end too. But for now, the AAL's were a cheap and easy fix.