I hoping somebody here knows where one can find either an OEM or NOS stock exhaust for my 1978 Kawasaki KZ650 B2. My bike currently has the original exhaust, which is starting to rust on the bottom part of the pipes on both sides. I've been having my local vintage bike shop try to find one, and so far no luck. I'm hoping you guys know of some sources for these type of parts. Thanks in advance!