for 86 gn besides the top section that is chrome with inset "BUICK" letters (in black) it also has the end fins ,center fin and lower edge are chromed , and no provision for any other emblems on the fins. and the gn differs from 86 Ttype in that the fins are all the same thickness , TType had 6 thick ribs spaced across it , regal was all chrome
the 87GN has narrower fins and all black with provision for buick emblem on the driver side, the T grill was same design and the regular regal was same design but chrome