The caliper mounts to the back. the caliper bracket is in front and screws from the backside because the caliper bracket has threaded sleeves pressed in them. Use the spacers in the kit between the spindle and the caliper bracket. My studs are in the 5x4-3/4" bolt holes not 4.5. Hope this helps !nova10sec said:Sorry, I was referring to the fronts, specifically if the caliper mounts forward or in the rear, or does it matter? Also the rotor cap screw off counter & clock wise, so there is an L & R but I was unable to find any designation.