I went to install my Genuine Mopar Part # 82209107AB WINDSTOP (that's what they call it!) today. In case you too have one laying around you'll need a 6.1mm metric drill bit (you can get by with a 15/64" but you'll have to ream-out the hole, and I'm too much of a perfectionist for that!). For $7.00 "all up" you can get one from this guy: https://www.ebay.com/itm/264710222781? In the "Size" drop-down box select 6.1mm. Also you'll need a Torx T20, plus an M4 (size) Blind Rivet Nut Tool like this one:
Or you can get creative and "McGuyver" the job, but that ain't me.