Here are the pics of the drag pipe baffles. Doesn't look like it would work for you, Milu. The outlets need to be straight. Anyway, all I do is slide them in and put one sheet metal screw in from the bottom to keep them from popping out. I just grab one of the inner triangle shaped flanges with a pair of needle nose to pull them out.
Intiguing thoughts on "tuning" the resonance out of my exhaust system, Wolfe. I would be interested to explore that. Right now, I'm already tearing it down to finish the paint before it gets too cold. When I'm done with that I'll let you know so you can take another look at that.