Hi.
Welcome to the club!
Those window regulators are unique to the convertable. The Chysler part numbers are 4336578 and 4336579. I did a quick seach on Arizona Parts and Parts Voice and nothing came up. If as you say the fan gear is worn you will need the regulator assemblies. The crank drive gear that meshes with them are still available through RockAuto at
www.rockauto.com as AC Delco P/N 11P34, they say they have 3 left. Good luck on the search I'm sure they are out there somewhere.