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Ant, it depends on how hard you torcher the brakes. I have eaten a set of pf80's, they did not work as well under severe use and the polymatrix from willwood pads faded as well. I went to the porterfield r-4s which are around 100.00 per set. They don't work well until they are hot, but work really well when hot. I am running the superlite willwoods 12.2 in front and pbr's in back. I have run the r4e's but thay tend to eat rotors. I also cooked the motil fluid and have gone to the castrol spf, which has been great. It depends on ultimately how hard you brake the car on the track, that will determine your choice of pads and fluid. Scott
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