3800 rear shoes are not available. You will need to find a shop to re-line the pairs you already have. More important is looking out for the keeper hardware for those shoes. Watch your parts when you break them down.

Also, if your drums are decent don't cut them. You can't afford to lose parent metal. Good luck - Joe

1947 - 3800 dually known as "Deadwrench"
Link to a few photos

In this world there are givers and takers. The takers eat well, the givers sleep well.