Using mustang rotors for 4.5" bc

Could you provide a link please?

Im thinking they aren't popular due to high cost(because SSBC is the source),but I couldn't click on anything in the image.Update; I went to their web sight,and those rotors are likely small bolt pattern. The reason for using mustang rotors is to gain the big bolt pattern,and thus access to better rim selection without having to replace most of your outer steering knuckle assembly.