If you're doing this then you might as well sandblast the bottom and clean it all up. What good is all of this gonna do when the car is rusting through five or ten years from now? A little more work in 2013 would save you a lot of work in 2018 or a whole freaking lot of work in 2023.
+Emmanuel Thommy Nothing unreliable about it, but it does make changing rotors a PITA. There are other kits out there that use the Supercoupe 8.8 set-up with outboard brakes.
I would prefer if the brake disc was at the wheel instead of the differential housing. better to show off your colored brake calipers through your wheels