Can anyone tell me what the hub bore is for FC brakes?



I'm looking to fit FC brakes on my FB, but I don't know if I'm going to need to have some hubs machined or if the FC hubs are the correct size to fit my spindles...

 

Cpracing makes brakets to fit the FC 4 pots on an FB. check them out>>>>Cpracing

 

I'm going to do my own work as far as mounting brackets are concerned, I was just wondering if the hubs from an FC would fit on an FB spindle. Thanks for the response though!