I am looking for some injectors. I only need 19# injectors. My engine has 154,000 miles on it and am going to change the injectors the same time I will change my intake. My question is I know the yellowish (or orange) injectors are 19# one's. But I notice the bottom of the injectors are painted black or silver or tan. Is there a difference?? Is one injector a single stream spray and the others ar 3 stream (or spray pattern)?? I am trying to cross Crown Vic's 19# injectors and by the book they won't cross for my 93 GT Mustang. Does anybody know the scoop with them?? I heard the Ford Racing 19# one's have a 3 spray pattern.