I'd be VERY reluctant to try pulling loads like that with anything other than a new, purpose-built truck with a LOT of factory engineering in its pedigree. You're getting into at least medium-duty Diesel territory with loads like that, and stopping and steering a rig like that with some sort of home-brewed suspension system could get deadly dangerous not only to you, but everybody who shares the road with you. A commercial vehicle enforcement officer would probably get writer's cramp in his ticket-writing hand if you ever got stopped and inspected.
Jerry
I hear you loud and clear. This is not my first build, but it will be by FAR my most extensive, by leagues. The one thing I have learned from previous builds is to stay close to home, and test a ton. Test, test, and test some more. I'm not the first to do this, so I hope people will chime in when they see what I'm doing and give constructive feedback. And I'll tell you my neighbor tows a 36' with his 3/4 ton Chevy Duramax 4x4, so I don't think this will be outside the scope of my, or the truck's abilities. So stay tuned, and please be open with your concerns.
