I have an '05 and I removed two and it wasn't quite enough. I then drilled two 7/8" holes in the third one and it sounds great. Almost a tick too loud but I can live with it.

I wondered why the frisbee was getting bigger......and then it hit me. '05 BA - Mulberry/Graphite,128 mains,42 pilots,TBS needles,drilled slides,debaffled stock pipes,Uni,no snorkel