WANTED 1970 Gemini sst50 parts and information.

Hi I just picked up a 1970 Gemini sst50 project. Looking for handle bars, gas cap and tank badges,spring for kick start,kickstand spring, side cover bolts, ignition with key and a few other parts . I'm looking for information on what Yamaha YG1 engine parts will work ? Places to find parts ? Thanks for you time.