Tried a slide hammer like @dddrewski
suggested but I don't think it did anything lol
So I went for the drill and grinder.
I've drilled a lot of metal over the course of this project and most of my drill bits don't last or handle metal as well as I'd like (even with cutting oil)
but these drill bits I used were amazing. I took the drilling quite slowly with cutting oil and it just worked.
Drills like butter (slowly)
A nicely drilled hole
Next I used a die grinder to grind the hole larger
Grinded until I could see the space where the snap ring would go.
A light tap with a hammer/punch and the shaft came out. Flipped it over and hammered out the other side as well. Snap ring was still stuck since it was well lodged/expanded into the race. I had to find some sharp picks in order to finally pry it out. It definitely wasn't going to come out easily...
With all that, I now have a race/cage/bearing/joint set for the outer hub and I need to next reach out to a shop to get these shafts fabricated.
A few things worth noting. The shorter shaft (top with yellow X) doesn't seem to fit either race. It might be slightly damaged from hammering or something.
Both outer races instead fit the longer shaft's (bottom shaft with yellow circle). It also looks like the Leaf side is potentially different as well. I'm going to need to check if the shop can work with these or if I need to make another prototype.
Not pictured, I have two Leaf axles for both left/right. Whats interesting to note here is the Leaf axle has a larger diameter and length. So I could have a shop cut to length, diameter, and splines the Leaf shafts to allow the CRX race to be applied on the outer. This in short means I don't need a shop to fabricate the entire shaft and instead just cut one side to size. A shop with a lathe and a milling machine setup for splines should be able to do the job. I found 1 local shop that might be able to do this.
Alternative, is another company out of state which specializes in custom axles. I believe they're capable at the least of making a custom shaft so I'll need to reach out and work with them on what they need sent over and how their pricing.
One option means I can possibly order "back up" shafts but is likely going to be quite expensive while the other might be cheaper but I probably won't get back-ups.