I bought this Screamin' Eagle 2-into-1 exhaust slip on muffler last year and I finally got around to installing it. Installation was easy and took me about 30 minutes from start to finish. The part that took the longest was removing the old muffler. Tools needed were a 3/4 wrench and torque wrench.
The Nightstick out of the box Part number: 80881-10and muffler clamp.
Picture of the old muffler as installed - to give me a reference when installing the new one