My 2004 Focus ZTW rear drums were worn... so I replaced shoes and hardware kit to include springs.
The only thing was the spring kit did not include the small adjuster springs, and of course one of mine was too bent up to reuse (previous owner).
The spring should look like this:
The first spring kit I ordered came with everything but these springs. I think the 2nd kit was 1-2 dollars more and was a Motorcraft kit.
Next time I pull the drums off I will replace the short E-Brake cable as the plastic split-nut is brittle and the spring is rusty.