I used to have my cross drilled and slotted stock rotors facing the opposite way, but then I noticed that most cars with stock cross drilled rotors (eg. mercedes 500 sl) have the cross drilling going the other way. then i was like what the heck, so when i got this kit there was actual writing on the disk (left, right) and with these disks they are directionally vaned, meaning that the fins inside the rotor are like propellers, they actively draw air from the center of the disk and blow it outwards through the center of the disk and into the caliper. so i think it is really a preference thing for cross drilled and slotted rotors, but personally I think the way I have them on is the correct way based on the other factory cars i have seen with these type disks.

lates
james