I am planning on purchasing an EZ Dumper insert for my 97 F-150 and putting a leaf box on it. The Dump insert weighs in at 800 lbs., and I am estimating a leaf box to weigh at least 150, probably more. I am concerned that I will not have the payload capacity to have the dump insert, box, and leaves without going over my truck's rated payload of 1600 lbs. I want to increase my payload and keep the ride height up, without hindering driveability too much. I have looked at Add-A-Leaf type suspension upgrades, but I don't think that they increase payload at all, just ride height. Any suggestions for ways to increase payload? I am not really interested in breaking the DOT regulations if I don't have to. I don't have enough cash to buy upgrade to a heavier truck currently, but maybe in the near future.