V6W (V6 - body side stripes; W - for white; or X - for black) for white side stripes on a '73. Kind of funny, but the codes stayed the same from year to year but they represented completely different types of stripes depending on the year. V6X for '70 was the iconic black "hockey stick" stripes while the exact same V6X code for '71 was the black "billboard" stripes. In '72 V6X was the black side stripes with the narrow portion over the rear quarters while for '73 V6X was the black side stripes with the wide portion over the rear quarters as shown in your example picture. All different stripes depending on the year of application, but all the same basic code on the FT or BS.