I tried to search for it, but there used to be a company that made replacement frames.
I might be worth it to find a spare rig from a location where the frames aren't bad, and you got spare parts, or you could sell off what you don't need and recover your $$. It might be pain, but it would be worth it in the long run. That's what I'd do.
Heck, find one with a rear axle still on it, and bolt on a hitch and tow it home!!
Another option is like
http://jimsgotparts.com/ they can ship!
