Glad I found this pic, once I realized how bad my midpipe and exhaust were I bought a used Muzzy on ebay. Do you remember the jetting you used for it Paul? I may stick with my now modified hindle pipe which after being taken apart will measure in around 15"
Prior to getting the Muzzy system, I already had Ivan's jet kit installed, with a Yoshimura RS-3 slip-on. (Ivan's kit is 110 mains, the stock pilots, and his own needle jets. A/F screws are turned out to 4 turns.)
I called Ivan after getting the full Muzzy system to see if any jetting changes were necessary. He said no... and in addition... he said he felt the full Muzzy system was the best performing exhaust system for the B12.
Side story... I actually was able to buy 3 Muzzy systems (retail value of about $1600) directly from Muzzy for $450 shipped when they were clearing them out of their factory inventory.
I kept the best full system for myself, and sold the other two for about $650... essentially giving me a great exhaust for free, and about $200 profit to boot.