Hack it up. Of all the frames in the world to agonize over, a gas-pipe French POS isn't one of them. What are there - 300 billion of these choking up the landfills?

Besides - it came from the factory without a RD hanger, and that's the big one. Other than that - two cheesy cable guides and some ugly and unusable pump pegs. If you really wanna "restore" it back to a geared bike, just add chrome brake cable guides. That would actually be a big improvement over the original design.