Yes VIR is great fun.
For info on what to expect from your brakes, check out the installments here:
http://www.ntechengineering.com/inde...ction=datemenu
It will be in the earliest installments.

 

If you are going to run on the track, FI or NA, you have to think about the brakes seriously. I have been running the 14" Stoptech BBK with Motul 600 and been very pleased with it on the G35, which is a couple hundred pounds heavier than the Z.