Hello I have a newly acquired 84 Riviera. Is this the same piece that's on the Eldorado and Toronado? Also, is there supposed to be a chrome trim piece along the outer edge, like on the Caddy? Also, does anyone reproduce the round rubber filler grommets that are on the part facing the engine? 3 of them on the front part of the trim panel, which seemingly can't be removed without destroying them. I would like to remove the trim piece to clean out debris underneath by the wipers, but there seem to be 3 hidden nuts behind each of these rubber pieces.