If you are looking for more stopping power, I'd go with a very good set of pads, and replace the brake lines with steel lines. I race my '84 in SCCA Improved Touring B, and have no problems what-so-ever with stock rotors, Carbomet pads up front, NAPA lifetime pads in back, and Earl's brake lines. Oh yeah, Ford Heavy Duty brake fluid as well (For their commercial trucks).
Drilled rotors look cool, but that's about all they are good for on a street car.
------------------
SCCA ITB '84 Fiero 2M4
AOL IM- DGPFiero