We purchased this 2021 Keystone Passport GT 2125RL new. It is almost fully equipped so very little is needed to start using immediately. I have towed it with a 2013 Chevy Tahoe 4wd 5.4 L V8 with no problems. We installed the 3000 Watt inverter/charger, 200 Amp Hr. lithium batteries so we had enough AC power for two CPAP to run all night. We use AC from any of the plugs all day and night and recharge with a generator. It usually takes about 21/2hrs in the morning and about an hr. in the afternoon depending on use. We use two computers, watch TV and cook all day with no problems.The anti-sway bar that is included works great so wind and passing large trucks are not a problem.The Maxifan is great for keeping the cabin cool and is very helpful when cooking to keep the windows from fogging up.The Level Mate Pro works with your phone and will tell you exactly how much you are off level fore and aft and port and starboard. You and move around on your pad toFind most level spot. Contact us for more information.