I have a f-450 tow truck with a build date of 9-22-2003 and engine ser. 6143766,the customer came in and wanted to replaced right bank of injectors and gave me allaint power injectors part # ap60900 that he got at another store,in the injector box was a massage about what injectors to use and how to tell by using the color of zip tie,the ones in the truck have a white top and a black zip tie,the ones the customer gave me have white zip tie and brown like color top and in there chart they do not have the injector that is in the truck, I called this diesel parts store and I gave them ford part # cn 5020 rm and could not cross the part # for me,has anyone else run into this,I have no idea if I have the right injectors, any input would be appreciated