Can anyone tell me with certainty if the RS package (Z22) required the Z87 trim package with the custom door handles.? I have found a few places that call those custom door panels and handles "part of a true RS package" but lots of other places that don't discuss the Z87 package as directly related to the RS. I know everything can be bought and swapped, but I'm trying to sort out as many true RS features as possible to up my odds on buying a real one. Thanks