This turned out to be a really good thread.

I saw it for a while but never looked at it until now.

The speaker fader knob broke on dad's Challenger years ago. He bought an NOS knob kit somewhere but never installed it. I just happened to find it yesterday and took a look at the contense. It came with more components than I thought the car needed. I now see...by reading this thread...that the kit contains both the rallye dash and standard dash pieces.