I really like the 337RLS and I am close to pulling the trigger on one. My only concern is my tow vehicle. I have a 2019 Chevrolet 2500HD High Country with 6.6 Turbo Diesel. I am willing to go over GVWR but worried about exceeding the rear GAWR. Any comments would be greatly appreciated. And any rear world pin weights, not guesses would be greatly appreciated