long time no hear...trust you have been well?
I replaced my detent last year using the Sosiak model - went smoothly however be aware the instructions you see are not 100% complete for our 62' models.
To get the chrome collar off, DO NOT try and lever it as you will break it. I had to remove the clamp near the steering box thus the steering shaft slipped right out and that enabled the collar to come off...after removing those 2 pesky bolts!!
Once I got there it was as per the instructions, quite simple, just take it slowly and take some photo's to be sure!