Family Tradition Bonanza

#1
Well my family has has this minibike since it was new. I am not too sure about the year but I know its a bonanza. Here is the first picture after taking it all apart and sanding down the frame and putting the first coat of paint on. As I was sanding I scraped the front plate of the front forks and found the original tag. The number was 19679. Not sure what that means but I preserved it as much as possible. I am going for the flat or satin black look with red rims and maybe some nice looking pin striping. Do they make white walls for these bikes and where do I find parts and chain size?
 
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