I have an Mr2 with the built in quick release, and drilled for a second injector, but the second hole is plugged off. Skimmer is about 3 years old. I will include a used Mag 24 rather than the suggested Mag 18 which makes this thing perform even better. I will also include a waste container that hooks directly into the skimmer cup. $250 takes all.
http://www.myreefcreations.com/psstandard.htm
http://www.myreefcreations.com/psstandard.htm