Murray track 2 specs

#1
Hey I was wondering if anyone had a spec chart for a Murray track 2 or could just name the dimensions of stuff I'm trying to rebuild one but I can't find any 4.00-8 street tires, is there a sunf or etc size bigger I can run? I measured the sprocket it's 2x2 center to center anybody know what specific sprockets I can use to change the ratio? Or the front fork info for Ordering a new front fork? Pretty much anything you can tell me I would greatly appreciate it I have a tape measure but I just want backup answers for peace of mind so I don't order the wrong stuff lol thanks guys
 
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