I have attempted to explain why the photo looks that way several time, so ok, I give up, it's a bent hinge. That has nothing to do with what I was refer to. The sedan hinge (door frame side) has a fairly pronounce forward curve near the hinge pin while the coupe hinge is straight in this area. Sorry for posting a photo that confuses the issue! The original question for me was I have heard of people claiming to modify the sedan hinge to work on coupe door frames, but I don't see any good why to go about that. You can modify almost anything into almost anything with enough effort, but this doesn't look to me like a simple or desirable modification. So my conclsion is a coupe door requires coupe hinges.