Where are you Kernal? I just took one off my Diesel cruiser, and its in very good shape They look like they're the same as the unit on a gasser. If shipping is reasonable you can have it for much less than a new one, and have a muffler shop splice it on for you or just bolt it on. I'm in BC, Canada.
This is assuming you just need to replace, and you're not looking for an upgrade. Let me know if this is of interest