What is the stock wheel and gear size for a 82 cb750k?

[joshscustoms]

I have a set of the black star looking wheels and someone gave me a set of wire wheels with brand new tires.  the wire wheel sizes are front 19 in and the rear is 17 with a 42 tooth gear.  Were these stock?  And what size gear is supposed to be on the rear?

[woodsrider250-2]

Yes, those are all stock.  In fact, I would think your comstar's aren't.  Dual disc front?  I think they did come in both dual/single configs...In which the single disc would be fully swapable very easily.  If only they made triple disc and spoked wheel combos like thier competative counterparts.