I still haven't found what means the UPC code ZP2 for my 1975 Electra. I know it refers to "Trim and color override" but what does that mean? My car has color code 49 (verde Mist) and LLA order code. According to the Sloan museum my car has these: lower color- L -verde mist top color- L -verde mist top style- A -same as lower color The interior trim is 44 green which is probably equivalent to the exterior color 44 Ranch Green. The order code is 160. From the domestic car report, the "ZP2" UPC code was found on 5160 cars out of 33778 (15.3%). Any suggestions?