Unrestored 1969 Yenko Camaro at Mecum

[55Hardtop]

I'm curious about the description of this car:

"Interestingly, the Yenko-installed Stewart Warner tach identifies it as an early production Yenko Super Camaro, later cars featured a factory-installed in-dash unit."

I've never seen anything that says the '69 Yenko Camaros came with a factory tach, that they were all Stewart Warner units installed in Cannonsburg?

I'm also puzzled by the blacked out rear valence. I was recently reading the interview Don Yenko gave in the April '87 issue of Muscle Car Review, in which he states that all of the Camaros were COPO 9561 cars, and that none were L78 conversions.

Any ideas on this? Don also states in the article that 500 Camaros were built in '69.