Well.. all those parts I named are different from each other on the 2 models... but they will all SWAP.
.. you can put the II cyl on the I.. (but they are not the same)
.. you can put the I manifold on the II... (but they are not the same)
and so on
(the reed valve from thr II will fit on the I after you carefully drill out the little locator packet a bit)
So... as far as I know... anything you get for the Camino fron 50ccnl... will fit on either one.
The only thing I don't know is how the I and II are different gearing wise.