Does anyone know a good source of heavy duty trailer hitches to fit a 5000CSQT. I'm looking for the kind that attaches to multiple points below the trunkwell and on the bumper. I've had one on my 4000 for years and have towed a 4000lb boat up steep ramp and other heavy loads, but I can't recall where I got the hitch. TIA for replys to this address. Ben Swann 3 Qs