One of the problems with just looking for emblems, stickers, or stripes is the fact that 99% of the resto catalogs offer them for sale today. I'm sure there are a lot of cars out there wearing Yenko stickers that are not Yenko cars, but the owner liked the looks of the sticker, or liked the mystique surrounding Yenko Chevrolet, so they got added to the car.
And, like Don said, Yenko sold a lot of unspectacular cars, just like any other car dealer...but noone really remembers any of those cars, do they?!