Moped Army

I bought two AMF roadmaster Mopeds off of e-bay for $50. I need parts for the McCulloch BHE 900 Engine, does any one know of someplace i could buy new or used parts from? I also need wiring diagrams and manuals. I am not sure what models they are. Any help with these bikes would be helpful. One bike is complete the other is missing a few parts like carb and engine mount/switch thing. I need all new electrical ignition probably.