Well since I've got a 31 5 window Iv'e been building, thought I'd jump in.
Ya can buy any patch panel ya need long as it's below the belt line ( the band just below the windows) just doesn't seem to be a source for anything above that, and beleive me I've searched, you can also get deck or rumble lids in either fiberglass or steel, and ya can buy the sun visor. Any thing else ya need above that belt line you will have to cut off another body or make it yourself......