Ok, moving under it's own power now.

Has anybody ran these before and like them?

Dynomax Performance
Dynomax VT Mufflers

Dynomax valve technology mufflers feature an exclusive, precisely calibrated internal valve that redirects exhaust flow during cruising conditions to provide drone-free performance. Hammer the gas, and the valve automatically adjusts for maximum exhaust flow, delivering on-demand performance and a deep, throaty sound. Available in a variety of inlet and offset sizes, you're sure to find one that will free up some horsepower and eliminate the cruising drone for your ride.

And with the Dynomax 90-Day Performance and Sound Guarantee, there's no reason not to experience the power and rumble only the Dynomax VT technology can offer. That's right, if you're not satisfied with the sound and performance of your VT muffler, you can return it within 90 Days for a refund