I'd recommend ditching the muffler instead and keeping the resonator, great aggressive sound and absolutely no drone. Here is a sound clip of mine and a pic of the tip.
1D29E4D1-7DBE-4368-B71D-68DA26DFEBFC-188-0000000FE52C7467.mp4 Video by xman03 | Photobucket

E07D9DD5-5E5F-4D62-8406-123D8555E4DA-505-0000004C5DC53C6A.jpg