My first question would be why? Big brakes are for corner turners, not drag racing. Brake bias in a drag car is setup exactly opposite of a street car, with the bias towards the rear brakes and tires. Skinny tires provide almost no stopping ability and are there simply to direct the car down the track.
If it's just for occasional track visits, IIRC, the medium pad height should work. Seems like there are only 2 pad height choices in the 18x4.5 wheels, low and medium, and low is for early cars with drum brakes.
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