I think those are Taiwanese-made and intended to be a bit of a Honda knock-off (obviosly, lol).
So there's a chance some Honda parts could be substituted (I'd use Taiwanese aftermarket parts to keep it "authentic", lol).
The brake cable is likely to work. The bearings are probably loose balls, and you could measure the diameter. The races are where things could get tricky, but it you're lucky, they could be the same as the Honda.
You should be able to remove the bars and drill the triple tree for some bar mounts, but with the bosses on there for the fold down bars, it may be easier just to make a whole new top tree out of .25" steel or something.