1. If they were specifically targeting a car they would state it.
2. Targeting a specific car like the RHD miata would be an unfair advantage for JDM miata owners since the LHD cars have extremely poor cross weight distribution when the cars are prepared for CSP/SSM/DP classes, moving the driver on the right fixes that. That would never fly with the current membership base.
3. The proposal States the cars must be identical, cosmetic changes are not "identical".
I said "cosmetic changes", but I meant within the context of that article's "comfort and convenience"... when I was looking at miata's, I would browse the auctions and there would be quite a few "spec v, spec r, spec xyz" but as far as I could research, they were the same car with only comfort and convenience changes, like being a limited edition exterior / interior colour, or having optional leather seats, wood trim, etc.
While they may not be 'targeting' miatas, I still think based on that information that is given that they appear to benefit to me...