How many were made?

[Pinballjim]

I got to thinking and I don't even know if there's an answer for this question.  It's a known fact that there were 1,920/1,935 Superbirds built for the public - street cars if you will.  There are websites devoted to how many of each color, engine, trans, options, etc. all of which are very helpful.   Here's the question:  How many 'birds were built specifically for racing?   Is there even a way to know?  I'm not sure I even know why I want to know.  Just curious I suppose. 

I know that NONE were produced that live in my garage.  I'm STILL trying to get one.  It'll happen...

[nascarxx29]

Racers updated there 68 to 70 car and had use of body's in white shells from.the factory and added wingcar parts hard to estimate