Here is a link to the kit to move the headunit to the center:
---------- Post added at 07:30 PM ---------- Previous post was at 07:27 PM ----------
Oh...then you can add this to cover up the stock head unit:
I just thought of this. You might could find the tape deck to throw in the middle part that came with the trucks and find a stock radio, then buy the adapter that goes into the tape deck and plugs into your iphone/ipod and plays music that way. I did this on my 97 Cheyenne and for a while on my 99 til I got a aftermarket CD player that USBs into my ghetto ipod. If you want to go more original thats what I would do.