not sure you can use the stock one, unless you are planning on using your stock lower/upper intake that came with the truck. The intake tube routes much like those of the 05+ GTs, off the front of the motor, then takes a 90* bend towards the fender. The GT intake plenum sits "sideways" on the motor, and the intake tube does a quick 90* turn off that, then its a straight shot to the fender. That is a very iffy description, let me post a pic..
Look at your engine bay, and you'll see what I'm talking about. Your best bet is to buy an aftermarket cold air kit, then find a way to mount the filter either in the fender, or next to the fender in the engine bay.
i guess ill stick with the stock intake untill i can afford a kenne bell.
how much boost psi can you run with pi heads?
how much hp will electric fans, 2004 gt cams, chip, throttlebody, and cold air give me?
also has anyone heard of the kenne bell shift valve?