Hi Stu
Have you tride removing the baffles from your stock exhausts I did it and it was loud but I had to refitt them whoever rode behind me complaned of the noise. Im not sure about the fuel inj mod ss but all you have to do with the carb vesion is drill through the three rivets remove the end cover/tailpipe and the baffle comes away with it then you just grind away the spot weld holding the baffle in place then refit the end cover/tailpipe
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