I did this a few months ago.
All of the parts can be gotten at NAPA/ORielly/AutoZone no problem and cheap.
The only parts that are not easy to get are certain bolts, that attach the brake cylinders and any brackets, so save them .
There are particular springs that attach and seat the shoes and they should not be interchanged e.g. specific springs hold down specific shoes. The conical spring holds down the front shoe
There are particular length of "nails" that are used to attach the shoes, the hold down springs are compressed on them and held in place with a sheet metal nut.
This month's Muscle Car Review has an excellent article on the whole process.

Also take a picture of the setup BEFORE you start removing anything and only do one side at atime so you can have a reference.
Get the special brake tool set with tool for removing and replacing the hold down springs.

Remember the small shoes go front.
Autozone has a whole, cheap kit with all of the springs, nails and sheet metal nuts.