right this may help you (just grabbed my subframe and rack lol)
The long bolts
which go into the subframe like this
now you can see in the next pic, the rack with rubbers under the clamps and the top holes on the clamps already bolted together slide the rack onto the two bottom bolts
See? then the two short bolts go from the back of the subframe and straight into the threaded part of the rack clamps.