nacanitihs

ok so i bought some springs off of a guy on craigslist and he said that they were Ford Racing lowering springs. now that i finally got them from my buddy that picked them up for me im not so sure they are. the part number on one of the springs is MOF E5SC-5310-KA what kind is this? i did a search and someone on annother forum said they were off 85-94 stang or 85-86 capri. so are these 4cyl springs or just stockers?