I got mine off a mid to late 70's Mustang and it ended up being the high output 210 model. I just saw 2 of them today at the salvage yard on 70's Ford trucks.
Here is a link with some good info on the Yorks. It tells how to identify which model it is by looking at the shape of the end of the output shaft.
http://www.coloradok5.com/york.shtml