Like said, prep is everything you need. Except the exhaust. Your 2014 onan LP? If not it can be converted to LP. Jayco gen prep is LP since at least 2017, unless a toy hauler.
2017 Eagle 293RKDS, factory ordered, lots of mods and upgrades. More than I can list.
2018 Ram 3500 crew cab long bed SRW diesel 6spd Aisin 4wd Tradesman.
B&W Ram puck 5th wheel
Mopar wheel to wheel steps