[Gav]

I upgraded the stock jag stuff on the front of mr CR to AP 4 pot calipers with 330mm HSV rotors (Thanks Mike). The pedal feel with the AP's is great and they complement the larger territory rear brakes I fitted earlier.

I found the jag calipers to be a pain to bleed, but other than that they where more than capable of trackday flogging. Your tyres will give out waaaaay before your standard brakes will.
I am sure with good pads your Nissan stuff will be fine.