idk if there is anyone still making rear kits these days. When they did they were EXPENSIVE around the $800-$1500 range.
What most do that want rear disk is swap out for the SVT breaks. However you must do both front and rear, if you dont the rear disks will be larger than the front and you wont get a desired result for breaking. You can source the parts yourself from a junk yard if you can find a wrecked svt. or they do pop up on the B-S-T area every once in a while.
Now in reality unless your road racing all the time there isnt really a huge need for rear disk breaks on these cars. Sure they look nice but a good set of front rotors and pads will do just fine for every day driving with some fun spirited stuff too.
ZETEC Crew #26 SR #20 YELLOW BLAZE OWNERS GROUP#4
Moderator Pilot, 12 SE HB ╠╬╝, 2011 Ford Edge SEL AWD