Re: COPO Camaro ID
X11 is kind of a catch-all code. It is the only code that included the RPO muscle cars and "regular" cars. (COPOs are the exception. They are known to be X11, X44 or X66.) So if you got Style Trim in a six cyl or a non-Z/28 small block, it was X11. Since style trim was part of the RS package, any non- Z/28, non B/B Ralley Sport, was also X11.
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