Repairing a Giant Suede-e

I recently aquired a second-hand Suede-e in excellent condition. Unfortunately, in the process of getting it home, a Grayhound bus backed into and destroyed the front hub motor. I've been looking into getting it fixed, but Giant apparently no longer sells the required parts. Does anyone here have any idea how one would go about finding these parts? Are they interchangable with any other bike models?

Failing this, does anyone have a recommendation for a replacement bike (preferably in the $600-$800 range)?

Thank you.