After closer inspection I see that they are difffrerent 2 by 2. so most probably fronts and rears are different and left/right are interchangeable.
Now hopefully I get it right
I did send an email to R1Concepts but it's weekend.. and I don't want to wait until monday.
BTW rotors are heavy.. 4 rotors and pads are in 60lbs package (all together).. is that heavier than OEM?
One more thing.. zinc plated cross drilled and slotted rotors look sooooo cool. Can't wait to install them
Thanks
Sasha