I have a '96 with rear drum brakes.
I have done the brakes all the way around....and posted step by step pictures at
http://community.webshots.com/album/201931518cScpNK
I used Brembo slotted rotors and Akabono ceramic pads. You can buy both at
www.tirerack.com
For the rear drum brakes....I bought Bendix drums and Bendix organic lined shoes at Advance Auto Parts. I replaced all the hardware. I recommend replacing all the hardware on the rear drum brakes..... You can get the Motorcraft hardware kit from
www.rockauto.com The hardware kit includes all the springs....including the springs for the self adjuster.
You may not need to replace the drums on your newer windstar. One of mine was out of round.....