Rear wheel well for a '72 Suburban

[magntik]

Can anybody tell me if someone is making/selling the outer rear wheel well for the suburbans?

Or at least give me some ideas on what was used to rebuild this area.
The lower panel where the 4th door would be is rusted and damaged, I got the repopped patch panel, but the inner structure pieces I can't locate. The lower front part of what I would call the wheel well needs replaced.

Any help is greatly appreciated.

Jeremy