Hi Jim

As Webra is gone parts are next to impossible to get.

You could see if you can find a after market "Snuffler" insert that will fit into the front half, you could see if another brand muffler will fit.
There were alot of after market strap-on mufflers that may also fit, also Mac's may have a tuned Pipe set that will fit, would cost more but
there would be a fun factor


Johnkpap