When race cars in ALMS(and most other professional motorsports) look for brakes, they turn to AP Racing. Check out the article "Ultimate GT Showdown" in Road and Track Magazine. Notice the factory brake setups, and then the brake setups on the race cars. See if you can see some J-Hooks under those big, expensive, centerlock wheels.
Ferrari F430 OEM Brembos to AP Racing
BMW M3 AP Racing
Flying Lizard Porsche GT3 RSR
The same technology is transferred to the AP Racing Curved vane rotors in slotted and J-hook for the Nissan GT-R.
Road and Track