Thanks to Precision Airguns in MI I received my Power Plenum kit last week.
My MK2 qualified for the $100 upgrade since I just got it in December, but I did not want to wait for FX USA to install it, or risk shipping it back and forth.
I paid $175 for the kit and learned alot about the MK2 on the install. Call these guys and get on the list for a PP if you want to install yourself.
-Steve