Would I need spacers to adapt these for my R53??? Boeing 747-8 performs ultimate rejected takeoff (Video)
This has been flogged to death. Depends what you're going to use them for, brake compound and what tires you have.
When will people learn, R53 JCW brakes are all any single person needs. Just get the SS lines, and good fluid, be done with it all !
That's big time overkill. All you need are stock brakes and the right pads. I know this for a fact because a pad vendor told me so.