Was the crossfire ever sold with smaller diameter rims in any trim level or were 18" and 19" always standard for every year and every trim level?

The tech guys would never notice unless they happen to be a crossfire driver. I new up sizing rims was a no no but thought that down sizing was with in the rules since there would be a substantial loss of rim width, 9.5" down to 8" in the rear.

Autocross is a gentlemen’s sport when it comes to rules, I would rather stay within the rule to compete its more fun for me that way. Specially, on the odd days when I win!