Trouble with ebay ?
I've needed a part, didn't see it on ebay, bought it new.
Two months later there it is, for almost nothing. Oh well..l
I'd do a search on Ebay and Amazon for anyone selling anything for your bike,
making a list to establish a search of most likely places.
Call them all up.
For example, I'd call a company that has Triumph engines/parts or looks like they have lots of stuff up for sale for any bike..they all buy wrecks.
Big places list lots for sale but no yard can possibly list everything.
They put stuff up they think may sell quick but also to draw attention to themselves in general. Hoping you will call them.
They may very have what you need but will never list it on the internet.
You could also get the diameter of my pipe, the length and distance of mounting from the joint and see if it matches any other bikes. An aftermarket source may be able to tell you what is interchangeable...Just trying to help. It would be nice to find the stock part used especially when you tune it.