The air bags will level the truck and Rv. If your truck is squatting, it will help your towing by putting the tow vehicles ride level. If you have a 3/4 ton truck, and add badg or helpers, you will increase your in bed weight capacity. The only difference in the 3/4 ton to 1 ton is those springs. Period. What will really help your load capacity is the dually. Notice load,not tow. Since many 3/4 tons can only add 2000 lbs, and the one ton dually is more than 4000 lbs, in the bed. The one ton dually is what you want for large fifth wheels with pin weight hitting over 3000 lbs.