The 73 cb350f I just bought has the original 4 into 4 pipes and mufflers. It has some of the common rust through problems associated with these bikes. Headers are in good shape and the mufflers also look pretty good. There are a couple of small rust holes on both mufflers on the shifter side near where the header meets the mufflers. Since these systems are rare does anyone have suggestions on how to repair them?
