This kit works with Brembo and non-BremboCalipers.
Tig Welded Structural Steel Comes with grade 10.9 hardware
You will need the same generations of caliper and rotors, as the designs changed the size of rear calipers and rotors after 2006. You must use 03-05 parts or 06+. You can't use 03 calipers on 06 rotors.