I did this exhaust setup to the X and, well it was incredible. This was on the 1.6L 16v engine.
Best performing exhaust setup on any of my cars, and I've done exhaust on about a dozen cars or so.
   ----
     | 2" Down pipe
     |
    O 2.25" CAT
     |
    O 2.5" Dual muffler (ebay Apexi)
    ||
    // 2" Outputs
    //
   ||  2.25 Magnaflow tips.
Will show some pics on saturday when I get home. Improvement on all parts of the powerband. low / mid and +++ on topend!
Not to mention, the sound, not loud or buzzy at all, defenitly has some bottom end to the sound, but not too loud at all. Sounds just perfect. My buddy Keith who did the work at Extremem Performance Exhaust here in WPG says he hasn't heard one come out the nice sounding in a long time.
Prettyyyyyy nice

Just sharing the setup,
-Steve