This is the second set of Air Lift bags I've bought and I love them. My first truck had them and I just added them to my 3500 Ram Dually. Easy installation with minimal effort and simple tools. In an ideal world an installation lift would be great but I completed the installation in about 1 hour with the truck on the ground and safely raised the back of my truck just a few inches to attach the bags. rear axle. Clear instructions, easy installation. Always remember to keep at least 5 pounds. Air in bags when not in use.