I ended up installing mine without a kit and just got the factory pocket. It did stick out enough that I couldn't get the bezel for the radio/HVAC all the way back on. It stuck out like a 1/4 inch on the top. It looked ok but not great. Just recently I pulled the bezel back out to paint it and figured I would try and make it fit better also. If you look at the bezel you can see a part of it on the back that just goes straight back towards the front of the car that is keeping it from going all the way in.
I took my dremel and sanded this portion away and now the bezel fits fine and looks much better. Oh by the way I tried a kit first and it turned out really shitty and felt a bit flimsy(sp).