My buddy's 8.1L/nv4500 powered M1009 on tons. It was the first major run on a frame up rebuild. It had a couple of teething issues, but nothing we couldn't manage.
Mud below 9500 ft, snow up to 11,500 ft. Higher we got, the deeper it got.
Then I hit a deep spot. High centered the whole thing on some glacial hard snow. Took the Jeep and Taco tied together to have enough holding power to winch me out of said hole.
Good prep run for the trip. I've got a couple of items to shore up in the camper to keep the rattles to a minimum.