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I was going through some of my old stuff and found an old .45 sportster, (old being at least 10+ years. The engine has a rectangular carb and the needle is on the carb itself, not detached.) I need to know if the muffler for the new sportster will fit or not since the original muffler has been lost.
The new ones will fit. I have an old one that has a threaded rod in place of the long screw that holds the front and rear end caps in place, complete with mounting screws, that you can have for $10 plus shipping.