i went to the muffler shop awhile back and i was thinking about changing the cats to high flows. my muffler guy quoted me about 200 bucks to change both of them. i thought the X was OBDII, so high flow cats weren't available yet, but i might be wrong. i think this would make a pretty big difference since it helped out my other cars. any thoughts?

p.s. i've done searching but it seems like many ppl having talked about it, or i don't know how to spell catalytic.