Exhaust Heat Insulators

I have a '79 KZ400 LTD. I need to replace the exhaust heat insulators and can't seem to find any on ebay or anywhere else. They're large washers about 1.25 inches in diameter and go between the exhaust and the frame. Does anyone have any ideas where I can get them?

Thanks

I tried checking the Muffler & Frame diagrams at Partzilla but couldn't figure out what part you need.
Could you post a part number?

I didn't find anything like that in the Kawasaki.com diagrams (see below). Are you positive the exhaust system and those insulators are stock items? Ed

I wonder if he means the exhaust header gaskets?

martin_csr wrote: I wonder if he means the exhaust header gaskets?

...sure sounds like it to me.