Hey everyone, I just installed a K&N intake, with a thotlebody spacer. I am so pissed I waited this long to buy on. It is night a day with response, and you do not need to get into the gas when trying to pass. It feels so much smoother when takinging off from a stop light. The sheets say that the intake will give you 15-18 WHP and the spacer the same. I will be putting the truck on a dyno soon to get the real #'s.
It took a little time and messing around but man is it worth it. I took a few pics fot you guys as well.
Here is the stock mess of intake.....

This is what it look's like when it's all done

These are the holes it sucks air from in the air box

This is where the air has to get though before it makes it into you motor

Now it has so much more area to suck air

This is the TB spacer

These are the little PITA screws you have to remove and replace

Here is the TB spacer in it's new home.

Note, you have to trim the fan shroud and the tip of the fan blades if you run the intake and spacer...Yeah they don't tell you that.
So get off your wallet and buy this stuff, it was the best 265 bucks I have spent on the truck.