I have a 49 Chevy COE 3-window cab. I would like to make it a 5-window! Would the corner windows of a regular cab be the same size as those on a COE? I'm pretty sure I can find regular 5-window cab parts trucks in some local old car junkyards nearby, but COE's are nonexistent! By chance, does anyone make a corner window "patch panel"? Is corner glass available? I'm new to this series of truck! My previous restifications have been on 55-72 trucks!