First let me say I'm not sure what brand mount I have. Anyway it mounted with a bunch less screws than the outside mount that came with the camper. Since I didn't want to drill new holes or have a bunch of holes not being used, I cut a thin piece of steel to fit in the mount on the camper. I then tack welded my adaptor to my mount. Fits like a glove.
2019 Hemisphere 272RL
2007 Silverado 2500HD 6L