Here is a Yenko Sportscars ad that also features the 1967 Yenko Z-28 Camaro Stormer. The picture was included in an article entitled, "Stormer: Yenko's Other Camaro" that appeared in the June 2012 edition of Muscle Car Review. It was written by Drew Hardin and the photos were credited to Jon Mello, Tim Lopata, and The Peterson Archives, so I'm not sure whose this one actually is. The caption for the photo in the article states, "Yenko beat Chevrolet to the punch in offering a rear spoiler for the '67 Camaro, a feat he trumpeted in this ad. Note that the Stormer in the ad is Bud Gates' car."