where I circled top to bottom:
1.screw
2.screw
3.bolt
4.screw
5.screw
6.bolt
undo 1, 3 and 6 on the factory intake (and unplug MAF sensor) to take out the factory intake
if its the Ztube, you'll have to loosen 2, 4, to replace the ztube and 5 so you can remove the factory airbox and install the K&n filter that comes with the stillen kit.
the POWERDUCT, right where the intake meets between the light and grille, is re-used from the factory intake box for the stillen. If oyu lost the clips you can use zip ties.
reverse to install, make sure where you unscrewed the tightening bands that when you tighten them the tubing is all the way over the plastic so there are no air leaks, and dont make it too tight, just tight enough for air not to get through.!
that's pretty much it man, simple.
the only annoying part is the k&N filter in the stillen intake shielding attaching it to the factory MAF sensor tube/accordion.....
other than that, its straightforward.