Ed is correct, 15x10 Dekagrams.

 

This is just hearsay at this point, but according to GoodWin Racing the 15x9 Hexagram, Countergram, and Dekagram should all clear the SuperMIata f88 kit:

I sent them this template:https://949racing.com/wp-content/upl...d-template.pdf

And asked them to check clearance on these wheels:
https://www.good-win-racing.com/Mazd...t/61-2986.html
https://www.good-win-racing.com/Mazd...t/61-2812.html
https://www.good-win-racing.com/Mazd...t/61-2507.html

And they told me: