Yea...I've got full KC from way back when. No resonator, and I also had the primary cats cut out (first attempt to kill the buzz). Also bought a new secondary cat and re-sealed all the joints with new gaskets/clamps. Still no luck. Now I'm thinking it's the mufflers. I even put a small glasspack where the original resonator was because I thought it may be resonant buzz, but no luck there...ended up just adding some weight to the car. NO idea what that stupid buzz is. Flexplate is the latest guess, but no time to take it to Subie, and no tools to check on my own.
But, back to the topic, 911 sounds awesome, and SVX sounds awesome