Another option would be to gut your stock pipes and replace them with after market baffles. A quick cruise through the JP Cycles website and I'm sure that you could find something to suit your needs.

2006 865 Neon Blue/Jet Black Speedmaster,790cams, TTP Stage 2 Firestarter, Epco Exhaust with 10.25" Samson Vrod baffles, UNI pods with 40 pilots, 150 mains,Thruxton needles, 3 turns out.