Spoke with Tech support at Kerker today. PAT Mikuni baffles were made for carbureted Harleys as part of their "Pass a Truck" system. They are free flowing 10 inch baffles with very little restriction. According to her I will lose bottom end and gain some mid range and top end, which is not what I want to do [smiley=nixweiss.gif]. She told me it was the wrong application for what I wanted and that the stock baffles would perform better than the Mikuni ones. They also have a Kerker baffle drag part #100-7580 but it is close to the one that comes stock in the SE muffler. I will make a management decision when I see the baffles. Maybe it was a sign that I could not get the baffles out last night [smiley=laugh.gif].