If there was an issue with interchanging i wanna say its with putting Kodiak calipers on a tie down caliper bracket and making sure they are spaced out properly to make contact with your rotor. I do believe that Kodiak rotors can be interchanged with tie down rotors but the calipers it isn't possible. I have experience with switching someone form a 6 Bolt Tie Down Rotor to a Kodiak and the specs on the rotors matched up. If you have an questions regarding this contact Kodiak Directly and they will be more than happy to answer any question regarding there brakes you may have.
Hope this Helps!