Backfill, those pics are sickening. It hurts to see an Airhead treated this way. I hate assholes. I say repair this. It deserves another chance to burn around your fine province again. That's what we do; we keep these outstanding machines running as they were intended to.
Have you looked into the local Airheads, as in the Airheads Beemer Club? Go here: http://www.airheads.org/
. I know there are quite a few in Ontario who know of the local expert/trusted Airhead welders, wrenches and parts suppliers.
They've a great bunch of like-minded Beemer geeks--always willing to help. Look into them.
Good luck, Bubba!