The brakes aren't going to crap. The pads are wearing down. 30k on a BBK, you have to expect the pads to wear... you can replace the pads and get a brake inspecttion for fluids etc...
For a performance increase on the stock brakes you can do this...
Z1 370Z / G37 Brake Upgrade Package (Sport Models)
Stop Tech makes a similar stock upgrade kit for a couple hundred more... you need to look for that one yourself.
You mean this link from 2 days ago? Lol