AM Solar's new tele number is Office 541-726-1091 or Tech support 541-255-0630. I talked to Dave who answered all of my questions.
There are better prices out there but, I don't think the total kit, wiring, mounts, controllers,tele support are matched by anyone else, or at least not by anyone I have found.
Also, their BP 44 cell panels 21.125x57.25 are narrow and work better on my older airstream. With your widebody, you could use the wider 26" panels by Kyocera and mount two side by side which is what I plan to do with the narrower 21" panels.