Park brake is stuck on?
So new rear brake cable(s)
Ford used both 9" and 10" drums, read here:
https://www.ranger-forums.com/drivet...m-size-135609/
You will need to know which so you can get the right parts
You can buy rear brake kits, they have all the small bits, springs and keepers, I have use Duralast before and have no complaints, check price
From your description you will need some of these parts
Backing plates don't usually "rust out", but.....................??
Depending on your shop setup I wouldn't think it would take more than 4 hours max, including changing the parking brake cable(s)
Backing plate is another story, because you need to pull the axle out