Got my Fullsac conversion kit in today and let me tell you I love them I should of done this 3 yrs ago. I'm running 2" Rush slip on and this install woke em up (I liked the sound before now I love the sound). It took me a little over 2 hrs to complete the install, now I just gotta get the heat shield for the right side the left side heat shields didn't line up perfect but I'm satisfied. I didn't notice any performance gains or loses but I only road it a couple a miles after the install (highly recommend if you haven't already installed true duals). For the price you can't go wrong (just under $200 shipped) Steve at Fullsac was really helpful and answered every question I had. Now my next project will be done over the winter and I plan on adding a cam hopefully....
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Remember that Harleygoodies sells a custom made 24" heat shield for around $65. I have one on mine and it puts THE finishing touch on the conversion. Email Tom as it is not shown on the website.