I have a 36' Diplomat and that's all the length they can squeeze into that coach. You have a generator up front and the diesel/trans behind the rear wheels. I did some work to my coach....shocks, ride height adjust and sway bars and I think it handles/rides well. It doesn'y ride like a 42', but rides well.
Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor