I am in the market for single axle dump. I am curious on how too find the towing capacity of the truck.I would like too be able too tow up too a 22k pound machine behind it. I looked at a nice 1991 F700 with a 12 foot box ,Diesel ,manual trans and decent miles. The negative is the GVWR is 30k. I guess there is no way around the weight rating and having too get a CDL.(I know I will need a CDL once I start towing that much weight ,but just in the interm). I need it just too haul debris from jobs. Not really worried so much about using it for dirt and rock delivery. Also any opinions on what you would consider a good choice make and year wise. I want too stay under 15,000 dollars. The above mentioned truck can be bought for around 8500 dollars.