Bobby that pic you found is off google by the way.



Just so its not far fetched, Honda stamped other parts "R" as well. like the rods


SOME of the crank girdles IIRC had the R Stamp as well.

I dont know what to tell you but im not lieing, and i dont think you are either. But my head was stamped "R" and it was authentic ITR. I was just making an offhanded comment