Brakes for 15 inch rims size.

I was researching the web for  reasonable  brakes upgrade for my Fabia. 

I already have DS2500 pads, ATE power discs rotors, braided goodrich lines. 

Found the solution that popular from  VW owners,  change  calipers to Audi S2 girling 60. I want to use 15 inch forged racing wheels for my trackday's so girling 60 will fit (Other calipers mod are for 17 inch rims).

Are Girling 60  which are 2 piston calipers better than stock RS calipers? Will they fit bolt on stock hub, will the pad fit and hoses? On photos they are almost identical.

Girling 60

My setup.