Thanks gents!
So as I start to putz on this a bit I've realized I lack some information. As some of you may know there was a window on the bottom of early Corsairs that the pilot could look down through. These were deleted during -1A production, but I have no idea when. This is an early -1A so there's a chance the window was placed on it. I can't find anything in my small library, so I'm wondering if someone else has something.