I just picked up my 5th wheel on Saturday. It's a Forest River Sandpiper 340 RL. It's big! My Ram pulled it fine with only a slight sag in the back from hooking up. Trans temp never got over 149 and the truck pulled nicely at 65. I don't think I'll need air bags at this point, especially since I only pull maybe three times a year. I'll let you know if I run into any issues.