The brake calipers on the 14 are good, the rotors and master cylinder are decent too.
Is this set up adequate for advanced group track riding, even if you put some Vesrah pads and ss lines on?
It's certainly not going to be optimal and there will be the inevitable fade.
I only have ss lines and srjl17 pads on my 10 and those brakes will start fading on me on a warmer day within a few laps.
There's no better braking than with the Brembo mc, it's precise and with a ton of feel.
And also you should never need that much stopping power for street riding, take it to the track if you're pushing that hard.