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I sourced my H-pipe for my '67 from Year One, although it was 20 years ago. Mine located both mufflers to the left 4" because the right side pipe was too long. I cut the right side ball flange flair off and had it re-flaired. This shortened that side .75" and everything centered up.



I have to do the same thing on 2 different install's to get the pipes centered enough so that the mufflers wouldn't hit the driveshaft. FYI....The mufflers are not supposed to be parallel to each other.