I agree with Dustin, just get new pads. I dont believe you need to get your pads resurfaced just because you replace your pads. Someone correct me if Im wrong.
However, one thing I do know is that youll have to push the piston in when getting new pads. For the rear, you need to use needle nose pliers and twist the piston while you push it in. Then you have to make sure the piston notches are lined up correctly.
Im too lazy to explain it, so heres a post on modularfords I found a couple weeks ago,
http://www.modularfords.com/forums/722257-post2.html And yes that is the correct way to line it up, Ive heard it from more then just that guy.