VERY nice work!!
This looks to be the area that goes into the backside of the hub(a single-lip contact area?)
The 1/2” wide Speedi Sleeve is a great solution in that spot.
Now..the trickier one to get a smooth fix is the stub end that goes into the tranny, where the double lip seal contact points are nearly the same width as the SS-risking it riding on& off the sleeve as the driveshaft works. Thats where a spray-weld “buildup”, and machining back to original diameter is probably a better call for that particular wider-area - wanna be really perfect to keep water out of tranny. Have you ever tried that process Gord? Guy here in Hartford does it.