+1, my auber PID and my ebay PID both have the same setup. one hole is a true hole, the other is a "slot" that will let you slide the pid into place with the screw already in the heat sink. both are the exact same footprint.
Having built a few control panels I would really recommend going with DIN mount components. It will be much cleaner to build and save you lots of pain in the long run. Open Source Control Systems has one of the best collections of DIN parts that apply to our segment in my opinion. Further I find their prices fair and shipping quick.