I'm sorry, but your questions seem vaguely worded,
so that it is not entirely clear what you have or what you are seeking to find out.
And from your bikes listed just now, we are still none the wiser ?!
I don't believe it, you still didn't answer the question - no N15CS or P11 listed ???
There are quite a range of these hybrids, and anytime other folks have enquired on these,
it has proved FAR more useful for them to provide a pic of what they actually have,
and then the combined knowledge here has been able to identify what is what and which is which.
Rick T in particular has a number of these things, and can usually point out the differences if a specific question is asked.
My understanding was that ALL the hybrids used the Matchless transmission
And those alloy clutch cases are also matchless and hybrid only, since they are a different length to anything that a (totally) Norton used.
So the N15CS and the G15CS were TOTALLY identical apart from the badges - but only in some very specific years.
There are quite a few Matchless lists available for download, but if you don't actually have a Matchless then this will be no help at all.
It has also been suggested that there are no specific lists for some of the hybrids, so its not just a matter of consulting a list,
it seems the details need to be dredged up again.
There are a number of websites and webpages on the hybrids, you have googled and read them ?
I have a very large (private) picture collection of all this stuff which I can use for reference, since I am well aware that not a lot has been published thus far.
Anthony someone has been threatening to publish a book on these, but thus far still seems a distant dream.
P.S. The last time I looked, a Matchless G9 was not a single, so this vagueness continues ?
You see where we are coming from...