2014/15 GT3 when swapping ceramic to steel rotors can the original calipers be used just change rotors or does it require complete set-up whats the $ figure

 

I haven't done it but Girodisc has a swap for the rotors and then you pick your favorite pad for 991 GT3 steel brakes. Done.

There may be other options. This one allows you to reuse the calipers.

 

You need to use aftermarket 410mm front and 390mm rear rotors. The PCCB calipers sit too far from the hub center for the stock 380mm (front and rear) iron rotors.

Here's a link to the Girodisc ones (don't know if this is a good price for them):

http://www.suncoastparts.com/categor...RAKESPCCB.html

 

I purchased mine from Clark at Apex. Worth a call.

 

Another option is to purchase red "steel" calipers to run 390mm factory or aftermarket steel sized rotors. Pretty reasonable and gives more room for those wanting to run 19" wheels.