Remember, the Procharger kit comes with a small undermount intercooler, its nowhere near as effective as this unit sitting at the front of your car.
Oh, trim the outer bungs off the top and leave the center one in place.
Make an "L" out of some metal (whatever you can find thats reasonably strong) and attach the center bung to your bumper.
Then use some brackets to attach the 3 bungs underneath to the bottom of the radiator support.
It'll be rock solid.
I can't help with that one, my kit came with the green top 42#'ers and I'm not too familiar with different brands of injectors. By reading the listing, they "seem" ok to me, but thats not saying much...