CHOO CHOO
BackPagePhil
Either way will work, but I have found and heard that installing them so that the slots are like this / toward the front of the truck. Some have seen better longevity out of the pads with them in that direction. The key thing to keep in mind is to make sure to perform a proper complete brake system service and then properly maintain the fluids often and you should be good to go with them installed either way. I have them installed both ways on my vehicles to test this theory, but they are all wearing so well that it is taking a long time to complete that testing.
This. I installed mine facing facing the front. I.e. the holes or lines closest to the outer part of the rotor will rotate towards the front of the car.