RSmark- youve basically repeated what ive already said lol yeah definately remove the tray, and of course cure the rust rather than leaving it behind, lol... and make good again! As ive already said covering over the sunroof is last resort, im a fabricator and have things like a press brake (sheet steel bender), plasma, tig etc so its not a massive concern if I have to cut my chassy in half and make half of it from scratch! Our favourite saying in my workshop- we can build boy, we can build!