I have the Pop-Up GN hitch, installed it myself, am very pleased with it. It is fwd of the axle. I pull an 8'x32' 2-axle enclosed aluminum GN horse trailer with a large living quarter and 3 draft horses on board, all the junk that goes with them, no problems. I also pull a GN steel flatbed 8'x26' 2-axle with around 250 square bales of hay at about 120# ea, no problems. I did get an offset ball which sets the trailer connection more toward the rear for the GN to clear the cab in short turning radius because of the short bed. I am very happy with the hitch.
CD