I have a Carat, it comes with the snaps pre-installed for the snap-on curtains. There is the ball shaped piece for the mid curtain, directly behind the drivers seats. One of mine was ripped out by a mechanic who wasn't smart about removing my mid-curtain. I've since lost the piece. GoWesty used to have them listed, but not now. I went to the dealer, but couldn't get what I wanted properly identified. 

Would like to have several of these for backup. Plan is to epoxy the area, and screw it back in.