I have a 1973 CB360 (10/73), it has a 1977 CJ360 swingarm on it, and as a result runs a 98 link chain. The original CB360 swingarm was shorter... if I was to guess, by 4 links... 94.
Not sure if it makes any difference, but the 77 CJ is Canadian, and the 73 CB bought in the States.