After performing this conversion on an 07, not much to add. On ALL Duratec cars '07 and older, I believe the servo mounts in front of the battery behind the drivers headlight. Info is a bit sketchy on 05 and older duratec pzev's, but I believe they are much like 07's. The Duratec throttle body and intake is mounted in front of the engine instead of behind it. The mechanical cable loops downward under the intake and takes a 180 loop back toward the throttle body mounting point.
The servo and cable is unique to duratec cars. The hardware & wiring inside the car is very similar for 00 thru 07. Later duratec cars seem to have a clockspring that's cruise ready. This was always true in 2007. You can buy a '05 to '07 steering wheel with cruise switches on ebay. I paid $50 for a leather ST wheel and it fit nice on my strippo 07 S car. The wiring harness is fairly simple, about 12 wires. My '07 already had the green interlock switch on the pedal assy.