pvr007 wrote:
How would this translate to a 1966 ko? Would it work?


Probably not work as stated above... the air cleaner on top of the downtube would most likely be in the way of the tank.
If you could eliminate the stock air filter, you'd have a chance.
Maybe you can look around the forum (probably in the "Customizing Your CT" category) for those guys that use a pod type of air filter, instead of the stock, later CT90 & CT110 air filters for an idea on to use a pod style air filter. As those are just photos, the search function probably won't help you find those threads with the photos, you'll just have to wade through all the threads and all the photos.
I don't think anyone has posted photos of a K0, with a pod style filter, at least that I can recall.

Paved roads, just more needless government spending...

I pick up my mail in Santa Barbara, California, USA.