Little confusion on my part surrounding "M-471", Paging Dr. 914 Options

[Lavanaut]

I've been wondering about this for a long time and was reminded about it last night as I was flipping through the AA catalog and came across pics of George's blue M-471 GT. It's my understanding that the true factory GT race cars did not have the "M-471" designation, that it was technically the designation for the "GT-look" package that one could order from the factory on a /6...?

I guess at the center of my uncertainty is this: when I see "M-471" I immediately think "not a factory GT", but a factory GT look-a-like...just like the wide body "turbo look" 911s.

Can someone help clear this up for me?

Thanks

edit: forgot to say that adding to the confusion is the verbiage in the AA catalog about the "M-471 GT" and its racing history.

[sixnotfour]

Why on the invoice I posted is it desinated as 914/6renn. ?

GT was a FIA race class that the cars were built to run in or GT spec.

Or on the invoice it shows gr-4/6R does this mean group 4 (GT)
and the cars is a 914/6R "Rennsport"

I think Reid want s M471 street clarifacation and I am wondering the same about the so called GT cars. Are they really 914/6R's