As I recall, it was the NGK distributor who told me they quit producing caps last year.
The bikes with electronic ignition need 5K ohms, but points do fine with 1K ohm. For some reason the 1K caps are getting scarce, while the 5Ks aren't going away as quickly.
I prefer the style that plugs directly to the stud, rather than the nut, but they seem to be impossible now. Not even listed in the chart.
Oreilley lists the 8011, except it's out of stock. Doubt it will ever be back in stock. :-(
And the rest of these sites - it sure can be difficult trying to find anything. They pop up with pages of disrelated junk.