After a few days in Sedona, going up and down rocks, the obvious weak link is the resonator/tailpipe on the 100. Started with a round tail pipe and ended with half moon pipe and a dinged up resonator. So I have looked into the Borola system--bolt on with a resonator (don't like, but could eliminate it), and the Doug Thorley system (cheaper, head quarters in Corona and no resonator). I also called The Muffler Man, located in Placentia, who would do a custom job from the Cat's back. I should be installing a new rear bumper this week too. Any advice? Any other shops you would recommend? I will be taking the rig to the muffler man to get a quote after the new bumper is installed, any questions that you might ask to make sure that I am getting something that will be usable? I am not opposed to something more manly sounding but I don't want it to be too obnoxious. BTW, pricewise, the Borola system for parts only seems to be the most expensive, the Thorley's are the least expensive (without installation) and the Muffler Man, for install and parts, seems that it would be less than both. Thanks in advance.