I know they're not Suby specific (from a 2005 RX8 ) but they are 5X114 so they'll fit an STi. They're my sisters and would make great track wheels or if you painted the caps they would look good on a Suby. $500 OBO w/tires. Only 5000 miles on the set. I believe they're 18x7.5 +50 offset.

 

these probably wouldnt look to bad.... wonder if you can take the mazda emblem off?

 

I'll ask her to take a look at it and see what she says. I'll get back to ya. I think they would look great, but I have a WRX so they wont fit.