The OD is not that hard. I did mine with an HF hydraulic press. Found a YouTube vid on "how to make" a press fixture. What you need is something to get up above the hub so you can access the retainer ring. I got lucky--had a bucket of special tools / parts / unknown, and one of them was "built for the job"
Biggest problem is you need a junk shaft to align the splines. This is a heavier duty one, same thing
