Today a mechanic at our dealership told me of a red '69 Yenko Camaro on eBay. That's not so unusual, but he said the seller is claming the block is a ZL-1 casting. Now it gets better; the seller claims that GM cast FIVE special ZL-1 blocks with "Yenko" clearly visible on the block, and they were sold through Canonsburg. Being that were only 69 documented ZL-1 Camaros and 2 ZL-1 Corvettes offered for public sale, and that the COPO Yenkos were iron 427s, I find it hard to believe that GM cast 5 rare ZL-1 blocks just for Don Yenko when the REAL ZL-1s barely got through the central offfice. Am I all wet here or is this a legit claim? I went to eBay tonight and couldn't find the car the mechanic was talking about, and I call b-s. I know it's possible--I've seen the picture of the phantom black-and-gold ZL-1 that was optioned to death and built for a GM executive--but that was a GM bigwig and not a dealer. Is this a fish story, a hoax by the seller, or a legit engine?