WTB - Standard Wheel Horn Button and Trim

I'm looking for the standard wheel horn trim for a 68 Barracuda, or other mopars that this style wheel was used. Does anyone know where I can find this horn button and trim? Also maybe some advice on what model cars this wheel could have been found on other than the Barracuda and Coronet?

This is the steering wheel I'm trying to find or make using a classic industries repro wheel.