I know someone in Massachusetts with an '86 Laredo that has all the chrome grille and trim, and he wants to convert it to black. I'm sure you and he could work out a swap.
BUT ... are you certain the black parts on yours are from an '84-'87? Chrysler changed the design of the grille in '91 to use fewer parts, and even the header is different. I don't think you can just take the old parts and swap them onto the new header (but I'm not sure, I haven't tried).
How many slots in your black grille -- 8 or 10?