Aprilia SR 50 1995 reconstruction

Good day, I would have the luck (or misfortune, that turns out still) and received the mentioned scooter. He was stolen from the owner. Found again and in an unknown condition, he did not want to have it anymore. No more papers, because in the helmet compartment. Other exhaust on it. Works certainly more like allowed, disguise damaged, ignition lock defective etc etc. I could not see the scooter but somehow at first on the recyclable yard, why he jetz The last time I drove a scooter was 20 years ago. Even that was more modern than the Aprilia. Now the question to the screwdrivers here, someone knows and can tell me what exactly an original old SR 50 air cooled has installed everything to drive the allowed 45 kmh. Exhaust, carburetor, distance ring etc. I read in other threads that a distance ring is standard. This is missing me. Safety. Then the exhaust is not OK. I would sell it. Then just need a suggestion, which would be appropriate. Carburettor should be original. What has to be there of parameters so that this fits? At the weekend it will be dismantled, then the whole extent will be known. Maybe one can help me with my online parts research until then already. The spare parts supply occurs with so far thin. Thank you already in advance. There will be still a thousand questions to follow. Greeting David The year of construction is estimated.