Just wondering what are some rules when retro fitting brake calipers from one vehicle onto another. Im sure there are rules and techniques for doing this, like what you should or should never do.

Reason is, I would like to retro fit some porsche(or other) calipers onto my FC or any car I may own in the future and use this for reference.

So let me know what are some do and don't of retro fitting calipers.