Just got my power slot rotors today, wondering which is right, which is left? This may seem like a stupid question, but should the one marked right go on the drivers side or passengers? Also, I've never actually looked at new brake pads (I won't be installing these myself) but I was wondering why two of the pads are slightly thicker than the other two (Hawk HPS pads, just in case that helps)?

right and left is always from you sitting in the drivers seat..... so passenger side is right, drivers is left

The slots need to be angled facing the rear of the car...

The inner pads are usually a little thicker than the outers... crazy GM design