Cory,
To get back on topic, what you really want is to get some nice plywood veneer, to achieve the look you are after THE WOODIES were actually wood not a sticker.
you can pick up the veneered plywood (hard maple)and make the panels, now you will have to buy hardwood trim to finish it out and make it look right.
I think tryin to put a sticker over it will look like ...WELL A STICKER..and really take away from your Awesome truck.
Just my 2 pennies.
Tim