My NL camper has the fiberglass section (mount kit) that is designed to distribute the weight of the ac over a broader area. It comes on units that are factory "ac prepped". This is why the ac unit sits a little higher above the roof, and the 3 support pads on the underside of the rear part of the ac unit are too thin to fill the space and provide proper support. I am waiting for a call back from NL, but plan to remedy this situation in any event.
The Honda 2000 will run the Mach 8 9,200 ac unit with no problem.