Ditstang on IG shared a post on how he does steering head bearings and uses this tool, which I have ordered: 

Getting that bottom bearing race off is proving to be quite difficult. We heated it up to over 400degF per the video and attempted to use an impact chisel on it but it won't budge. Cutting at it with the rotary tool is slow but seems to work. It at least moves now. Duncan thinks his impact chisel isn't powerful enough for the job and that we should try with a more powerful one. I'm not sure. There is clearly something we're missing.

The width between the steering stop is 58mm.

Took Keiran driving today and had me cart me up to Bob's where I picked up after market steering head bearings and factory dust seals. I just can see spending $150 for two bearings especially given the likelihood that I will destroy this first set I put in:

I found two videos showing how the job is done in a K75RT which I've added to the Movies tab on this project.