Thanks guys!
I'm thinking it would probably be easier to prove that the sub model was built in annual numbers not exceeding 20,000. Assuming that is in fact the case and this post is accurate:
http://www.camaro5.com/forums/showthread.php?t=271229. We'll see!
I'm becoming overwhelmed with the amount of options I'm being given to be honest. Need to get my head around everything and make a decision soon!