On my car the original door bumper are symmetrical with no ridges. I haven't installed the replacements yet. The deck lid bumpers were incorrect on my kit so he sent me the correct flat ones. They have ridges that face towards the inside of the car, but I'm not sure how the ones you have should be oriented.
Thanks. Yeah, I'm pretty sure the door bumpers don't really matter because the shape is essentially symmetrical, like you said. The decklid bumpers are the ones that are tripping me up. I wish I had paid attention when I took my old ones off.
