Head over to the racing supply house, cleverly disquised as your local Lowes/Depot, and get the following:
1-1/4" pool and spa hose (150 degrees rated) The ribs help with mounting and its smoother inside than vacuum cleaner hose.
2 eletrical boxes with flanges and open back
2 box covers with 1 1/2" holes
2 plant stakes
some pop rivits and whatever black paint you have laying about.
Secure the box covers to the front of the box and paint inside
Remove airdam from the car and clamp box in place. The airdam will likely be curved from years of wind and curbs, so you have to force it flat. Rivit boxes in place.
Using the box as a guide cut the hole in the dam, then mount back on the car.
Pull off the rotors and remove the splash sheild. I had to leave some of mine in place as it further sheilds the grease seal. Cut back what you can.
Now lets bend up some brackets for the hoses. Use a socket that just slips inside the hose to wrap the wire around. leave some off each end for mounting.
Once you've got the hose end in the mount, use the sheild bolts to secure it. Don't overbend and break (or weaken) the wire. Test fit the rotor and check your clearence. i have tried to aim for inside the hat near the caliper. The air should get to both.
Route the hose back to the box. I found this size will snap in fairly securely dispite how it looks. Check your routing with the wheel turned full lock each way.
While a 3" system is certianly better, this fits in tighter places without cutting up inner fenders and so on. Used this same idea on my C4 Vette and it solved my braking issues. I have a track day with the Firebird soon, we'll see how it goes!