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they make stainless rap around clamps not the U type we use all the time they are like 4 / 5 inches long and in what ever size 1 3/4 ?????? and completely seal the entire pipe, use two to do both ends - around 8 bucks each well thats what we pay for the 3 1/2 inch ones we use on headers w/ open end and bullet mufflers for race cars, never had one come off - jz
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