How about these?
NAPA 262-1161 But no telling if you need oversize pins or not until you remove the old ones and inspect the axle or find you already have oversize ones.
A hint for installing the new bushings is use plenty of Never Seez on the outsides, I put in 3 last night without issue then the 4th galled in the spindle bore really bad, should have used more goop I guess. I was able to remove it and now I'm waiting a week or so for the replacement to arrive.
On your rear axle project, do you plan to swap to single rear wheel drums and make a new backing plate flange to weld to the axle? Don't forget the spring pads need to be moved as well.
I'm getting back to mine soon, just priced those drums at $134 each, a lot more than I had remembered....
Grigg