CamaroJoe, that is a really good and logical point, and maybe the question is silly, but the X66 code sets the first 50 Yenkos apart from the rest, not taking anything away from any Yenko camaro, they are all rare and unique, I just like the X66 trim on those cars espcially the blacked out tailpan. I thought that maybe Berger might have had some X66's since they were pretty early in the COPO game, being that they received the #3 ZL-1. Thanks.