Sorry to chime in a bit late on this one (hey, after all I'm from Switzerland and we're a bit slooowwww around here)(that's why I drive a Vette, to make up for it
), but you may want to check another solution that'd presumably be cheaper than new rotors, i.e. rotors resurfacing.
I had the same problem of brakes pulsating with my 96 when it was approx 40k miles, and I saw in the shop manual that the rotors could be resurfaced. I guess this applies when the rotors aren't actually warped, but their surface is just uneven, thus causing the pulsating...
Anyway I asked my local Chevy dealer about it (I was in Durham, NC, at the time) and with some insistance from my part they agreed to resurface my rotors. The result was really good, it felt like I had new brakes (I also had new pads installed on this occasion), with no perceivable pulsating anymore. I now have 11k more miles on the car and the pulsating did not come back, the brakes feel nice and safe. If I remember correctly, it cost me approx $150 for the front rotors, and that is worth it in my opinion if it gets me another 40k miles of good braking on my stock rotors (I guess you cannot resurface the rotors more than once or twice, otherwise they'd become too thin).
Believe me, the brakes you get in your 96 CE are very good (they are the Grand Sport brakes as far as I know) and they do not warp that easily under normal or even "spirited" driving (racing may be different though). So there may be some good life left in your stock rotors that you may want to use, because you paid for those rotors after all (you did not mention the mileage on your car though).
Hope this helps,
Ptidod
Art
Brake-Pulsing 
Linear Mode
