tell u what, i just installed a set of yosh carbon fiber r77 dual slip-ons tonight on my 08 busa that i've had for a week now. I wanted to stick with the dual pipes and didn't care for any more power out of the bike. Installation was a breeze and only took about 45 minutes, sorry i don't have any pics up yet i will try to get some soon. Anyway, for slip ons these cans sound great, i was very impressed, not an obnoxiously loud sound but a deep low rumble when cruising at low speeds, they also look fantastic. I like the looks of dual pipes on the busa bc it stands out a little more and doesn't look like every other sport bike on the road