Okay I found the aluminum mount, fire extinguisher, toggle bolts, and black aluminum support plate, and rubber support plate that can be cut to shape. This should spread out the stress over a wider area so it doesn't damage the paint, indent, or rip out of the aluminum body panel. I'll mount the tank either vertical between the passenger and cargo window or horizontally under the cargo window. Cannot make up my mind what would look better mounting wise. the other Rover driver had his tank mounted along the rain gutter and roof rack. However I feel the mounting location should distract from the top heavy roof look to make Rover look more balanced.
Does anyone know if there are any wires or sensors between the windows or under the cargo window? I know there is a storage bin (if you don't have chairs) but can't find any diagrams in the RAVE manual.