Endurance race brake pad selection advice

[Astonished]

Hi all

Not for RS4, but for an Opel Corsa C 1.4l 2002. Yes, an unlikely track car, but it's a charity race day restricted to the Opel, badged as a Holden Barina in Australia.

The race is a team event, 4 drivers, and other than lunch and driver changes the car stays out on the track from 9.30 till 3.30, so we need GOOD brake pads.

There isn't much availability in Oz, such that my mechanic is concerned that his selection will only get us to lunch. And yes, we could change pads at lunch but if we have a better pad available then I may as well run with that.

It seems that over the Internet from UK supplier my choices for the car are:

Diamond Black
EBC Green
Brembo Sport

Anyone know which of these, if any, are near race pads rather than "fast street" or "lap dash" pads

Thanks heaps