Using mustang rotors for 4.5" bc

I was just looking at photos of the SSBC (Stainless Steel Brakes) KH disc conversion and wouldn't you know it, their rotor looks just like the Mustang Rotor!

http://www.earlyabodyforum.com/board/messages/2/2922.html

I think you've just figured out how SSBC puts their kits together.