I've got a 2000 GMC P/U with the 5300 engine and a 3.42 rear end. Glove compartment book says it will tow 7,000 lb. I'm looking at a Jayco Feather 29N. It has a dry weight of 5190 lb. and GVWR of 6500 and exterior lenght is 30 ft.. There is no way I'll be at the 6500 lb weight when I tow,,,it'll be kept at approx. 6000 lb. 'll use the weight distribution hitch and sway bars. I live in Florida but would like to tow to Maine in September and October. I'm not new to RVing but have been in diesel pushers for a while and need imput on going back to towing. How will it tow on flat ground and how about in the NE mountains? On downhills will 6000 lb push the truck within reason? What say the towing experts.