Does anybody with anaftermarket slip-on on their F4iknow the diameter of the muffler inlet? I have a929 with an Erion Racingfull system which is a slip-on muffler setup instead of a bolt-on. I'm justneeding to replace the muffler,but I called Erion and they no longer make a replacement slip-on forthe full system. From what picsIhave seen, it looks like anaftermarket slip-on muffler for an F4i would slide over my mid-pipe andwould also have thehooks for the two exhaustsprings.