Originally Posted by Dragoneye
It's been stated earlier in the summer, and it's been pretty common knowledge since then. I think Oshawa's Open House was when they said it.
Have you noticed that nearly all ZL1s shown since then have been wearing the ten-spokes shown for the first time at the Camaro5Fest?
Sounds like a easy naming scheme to me. ZL1 - Black 10 spoke, Polished 5 spoke. (Get away from the SSX terminology.)