Ken,
FYI: Vertex sells rebuilt calipers front and rear for ~$100/piece.
See here:
http://vertexauto.com/epcproductdeta...vertexauto.com
Their rebuild kits are ~$14/piece.
The only tricky part to rebuilding the calipers is getting the old pistons out and placing them in their correct 20-degree orientation. If you have a bicycle air pump, you can rig a decent air compressor with a spare Schrader valve, short piece of hose and a couple hose clamps. To get the sticky piston(s) free you can hold the free piston in place with a c-clamp and pressurize the caliper until the old one pops out. Maybe a little PB Blaster into the brake line (after dumping most fluid) and on the exterior of the piston (after removing dust shield) will help break up the rust/crud.
BTW: Zimmerman OEM replacements (solid) and the OEM rubber lines are the recommended replacements. The x-drilled rotors have a tendency to crack around the holes when subjected to track duty and the SS lines will not show wear due to the SS shielding and are 'supposed' to be replace every few years (sources say).