Arent the the rear pads (two for each wheel) supposed to have 1 pad with a clip, i.e. in a box of 4... 2 have clips 2 dont...just like the fronts?
I just received an order of Hawk HPS Rear Pads (Non-Brembo) (634100905) as well as teh fronts from Performance Nissan out in CA and I noticed the rear pad box was open and only 1 of the rear pads had this clip.

 

i have a set of same rear pads sitting in my apt. i will check it tonight and post.
and i think hawk never seal the package so its ok that the box is opened.

 

Performance emailed me and said no only 1 on the rears....