I have that set on my car. The standard Ferodo DS 2500 pads on a full weight GTR dont cut it on the track, esp when you have some poke. They got a little spongey after 5 or so hot laps. JAGR33 (Jack) ran this same kit and was running some Pagid pads. Yellow up the front and black up the back if I remember correctly.
Brilliant Value for money. The calipers are so much lights than the standard R33/R34 Brembo's too.