It says in the instal guide that the opening needs to be centered so it would need to have a new opening cut. That's not a big deal and you can leave the old one. They sell a square cover with rollers on four sides that would work. I just see how to move that shelf. I guess a shop could take a plasma cutter to cut it out and wield it back a couple inches higher. Lots of wires in there and would need to measure it out better than I did. All said in done its going to cost 7-8 hundred to do. Just a guess but I bet I'm close.
Phil and Dianna
2011 Berkshire 390 RB