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buy a new set of pipes and get what you want, modifying baffles never seems to work and still give you performance. If you just want loud leve them out, if you want louder and performance buy something designed to give you that. Probably a good 2:1 if you want to maintain your tq.
Figure out a way to add a "torque bolt" as close to the end of the baffle as you can. I did that on my boom can baffles and it made back the tq I lost when I went to the power curve, and kept the same sound. I welded in 1/4 bolts. I think Rush does that to their baffles too.....
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