I'm guessing that your talking about the WT grille. The one with the sealed beam headlights?
Yes, they are interchangeable. You will need the inner and outer grille (the outer is the one that goes from fender to fender), the new headlight buckets, new turn signal assemblies, and corner lights and reflectors. All of this will be pretty much a direct swap. You will need to paint the outer grille (if you wish) to match your truck.
You will also need to do some minor electrical work to function with the difference in the lighting. You can purchase all the bulb sockets form your local autoparts store (checker/autozone). You will need to alter the headlight wiring because you will now have a separate bulb for the low and high beams. There are 2 bulbs for the marker/signal lights instead of one per side. There is also a small bulb on each side for marking and signal operation.