Well the little race car was experiencing some really bad brake fade on the track an eventually warped a set of brand new rotors. I decided to diy some brake cooling ducts and cross drill the rotors. I made up a template in cad and started drilling away at a new set of rotors. I then fabbed up some 3in tubes onto the backing plates. After a little bit more work and some flexible tubing, Whalah!!!,, cross drilled, fresh air force cooled brakes.. We will see how they hold up this weekend at Thunder Hill Raceway.....Skid