I have been thinking of changing out mufflers for a while now, and I am gonna try...... An Aero-turbine muffler. Their stealth series to be exact. Here is a link to their site for more info.
http://www.aeroexhaust.com/aero_stealth_200.html
Hopefully it will work (the link). We have been selling these for a while and I have been wanting to try it out.
I should have installed by Thurs. and I'll try and figure out how to post some sound clips.