i was told the copo is a part # (no vin)there is no where that you can look up a part # for a gm copo rear end

, thats what alows them to say older cars can't use them because its not a over the counter part sold by gm unless you bought a copo or a rolling chassis

. i don't think you can even buy a 2012 camro and build a stocker with that rear end because it didn't come in any corperate car