Over the past week, I stayed at the campus of UMR, got bored and went to the library. After searching through their library for rotary related books, I struck gold.
First I found a Senior Thesis on the wankel from the mid-70's.
Next were two separate documents from NASA on:
Effects of certain chemicals on engine internals
Chemical coatings of rotor housings and their performance and longevity
Also, I found their archive of automotive magazines (Motor Trend, Car and Driver, etc.). Every magazine published was in many bound books.
Here is a link to what i found:
UMR_pics
Sorry for the fuzziness, as these were taken from my cell phone.
As you can see, there was a large aftermarket for 7's in the early 80's. Image #55 shows a turbo kit for the 7 for around $1500 from a company "BAE" I believe, and #57 is aftermarket taillights.

 

Cool stuff, so what did that thesis paper say? Anything intersting?

 

cool find