I read a post about celica brake swap on a xB but I wondering if the TC brakes/rotors will be a direct swap. Where would be a good place to find the parts. The TC has disc in all four corners, which would be different for the Xb going from a four lug to a five lug.

 

To get the celica/tC breaks (same thing) you would need to convert from 4 lug to 5 lug. This then gets into real high cost, for something that is not really better. You would need to buy the hubs, the disk, calipares, upgraded brake resorvoir, pads, & so on. To top it off, you would then need a set of wheels with the 5 lug pattern. Go after market, you would be much better.

https://www.scionlife.com/forums/vie...ght=king+smart
https://www.scionlife.com/forums/vie...ght=king+smart

https://www.scionlife.com/forums/vie...highlight=disk
https://www.scionlife.com/forums/viewtopic.php?t=2670

Good luck with what ever you go with