Headliner steel bows.

It is really important that if you get an incomplete set, that you get the EXACT ones you are missing. If you mix them up from where they were originally, throw them in the trash. The headliner will never fit correctly unless they are in the correct original order from front to back. Also don't buy a set unless they are numbered front to back and the seller is 100% positive that's how they came out. Too many people learn it the hard way.