Okay, so i made a test pipe for my 8 and i am looking for the flanges for the pipe, i still need my stock cat so i cant take those off. I found the 3 bolt flange on mazdatrix.com does anyone know where i can get the 2 bolt back flange to the muffler? or does anyone know the dimensions on it? i would really like to try and get this done within the next week and i can not find anything online.
Thanks!

 

Well turns out the back 2 bolt flange is the same for the rx8 as the rx7 so Mazdatrix.com has both of them, thanks everyone! and i hope this helps anyone who ran into the same problem as me!