I restored one of those a couple years ago. The bike was in very poor condition, but it had sentimental value to the fellow and he insisted on restoring it for his father. After two years of searching the world for parts, it came out very nice. It was a great little bike but some parts were hard to find. I see that yours has the "horseshoe headlight", guard it with your life, it's very hard to find replacements. I can't give you any particular sites for parts, but check out Suzuki2stroke forum for help. Good luck
........Paul