www.fastbrakes.com
just replace them with stock ones.
braking distances are shortened by caliper clamping force differences not rotor size or whether it has cross drills or slots.
if you were really serious about upgrading your brakes you would go to a 2 piston caliper instead of the stock 1 piston caliper.
Secondly if you go to a big brake kit like an AEM which uses the stock 1 piston caliper size, you're f*cked if you need to go to slicks on the track since the smallest size wheel the AEM big brake kit can accept is a 16 in. diameter...it prefers a 17 in. wheel in actuality. So there you are with a 14 in. or 15 in. slick and no way to put it on.....doh!