Hi Garth, the "magic Mirror" cowl tag and "YS Tag" both started with '68 model cars from what I've found and been told. I'll be more into the engine information and trans in time.Certainly is an awesome find. But we haven't heard anything about the existing drivetrain yet?!? 4spd if my eyes aren't failing me as it looks like the non-Muncie (speedo) hole is plugged. Looks like an RS hole next to the master cylinder hole. I assume it's got a "Magic Mirror" cowl tag? YS tag in the door jamb?
And the car was equipped with Turbo 400, but 4 speed was added at some point but the Turbo 400 is going back in and will show some minor surgery needed in tunnel area to repair.
Everyone, this is a picture of the "magic mirror" tag Garth is referring to that was recently posted on the Yenko Website.