I actually prefer sleepers.

Why dress it up when it doesn't have the pop? Of course the blue & white 67 Camaro my stepson and I are a building for him is definitely a clone. But its more of a styling excerise based on what he likes... afterall, whomever has heard of a 67 SS 327 Camaro with Z28 runway stripes?
My tame looking little retro gold-on-gold RS would smoke its tail in a minute.