Hey 4bangen...thats not a cold air intake. All you did was cut a piece of PVC and paint it, and stick it in place of the air silencer. When you still have the stock airbox it's not a cold air intake.
FYI, tealtiger, he has a speed density car and that's just the stock airbox.
I suppose a 5.0 cold air intake MIGHT work, but you'd have to make it work yourself. There are writeups in the tech articles about how to make cold air intakes for both speed density 2.3's and mass air cars.