Any ideas what a NOS rotor housing would be worth?

 

Really depends on the year and model. I sold a set of early NOS 12A rotor housing (dual dizzy) for $800 less then two years ago. I still have a bunch of these housing used that look like new. Even have the original boxes.

1981 - 1985 could be worth $1000 or more.

I purchased NOS 12A housing in 2004 from the Mazda racing program and paid $350 each. They are now in my rebuilt 12A with zero miles.

 

I have one. It's for the 81-85 series. Thinking about selling it.
I see you are in Liberty. Any rotary shops in the area? I am moving to Olathe.

 

The best rotary shop in the KC area, in my opinion, is Jesse Prather Motorsports. He really doesn't advertise but his work is the best. There are others in the area and I'm sure they are good, just haven't used them.

JessePratherMotorsports.com