Bands, much much cheaper than from Ford and reusable, too, are readily available. They are basically big pipe clamps. Look at American Muscle dot com for a source. You can reuse the module on your existing wheels or buy new ones, also at the same place. I got a whole new set...bands, modules, programming tool and even an install video on DVD for less than Ford would charge for one wheel...and these are Ford-branded modules, too!. Finally, there are now available the valve stem modules that are compatible with the original band modules.
Cheapest is to reuse your modules and just buy the new aftermarket bands and mounting holders.
=Vic=