Thank you, Harold! That will definitely be helpful. I'm trying to get my wiper panel cleaned up now...makes sense to have it installed first (I never took my rear panel out).
One piece is about 11.5" 'deep', flat on one side and slightly curved on the other. It has 7 curved notches on one long end, and one curved notch with three holes on either side. The other one is roughly 14.25" 'deep', has nothing on one side, and 7 curved notches on the other. Both pieces have two larger curved notches on both sides. I have no idea which one is front, back, or which way either of them are supposed to be facing. It didn't come with a diagram or instructions, and everything I find online is just pictures of them (like the one I posted), or directions on an install. None of it tells you which one goes where. I'm sure I'm making it harder than it needs to be, that I've never installed cardboard in the top of a 75 year old truck before. LoL
