Earlier we installed GT3 brake ducts to improve cooling. (Shown at left above) However since we drive pretty hard on a regular basis (while instructing at BeaveRun) it has become appearent that still more cooling could be used. This really came to light after we started running Pirelli Corsa track tires and began generating much higher brake torque as a result.
So to assist with more cooling we have installed a set of 997 GT3 brake ducts. These are deeper and have additional channels to feed more air to the front brakes. We will be testing soon and will see whether they suffice or whether we need to go full tilt with the 997 GT2 ducts. The GT2 ducts are so large that they can reportedly scrape speed bumps man hole cover etc. So hopefully the regular 997 GT3 ducts will suffice.