Muffler Repack kit came in. First thing right off the bat, you will want to wear gloves. The stainless steel wool is pokey, and the fiberglass is itchy. This is a pretty complete kit though, and I like that it has a screen to wrap around the core. I did order some stainless steel zip ties to help with a couple parts of the wrapping process, but they aren't entirely necessary. I like that it even came with new pop rivets.
The best part is, it is exactly enough material to do both of my bikes. So if I get the chance I might just do both mufflers tomorrow at the same time.