I've had the airlift 1000 bags on the rear for a month now,
and pulled a 20' 2500# camper last week..
no problemo -besides the 8-spd shifting a lot
I like the bags..
pump em up for the load, air em down when done and truck settles back down
I used the Airlift 60824 Durango application as suggested in this forum as being applicable for a lowered 3"+ '09+ 1500 Rear...
so far so good, they seem to fit about perfect.