try to find some better rotors i guess, as for the HP+ i mean yes they will fade but that was after i did 5-9 130-40 mph stops before i got any sort of fade. Use brake duct hoses (make sure you use aircraft grade heat resistant material or theyll just melt and be useless). i would go with the HP+ on stock calipers, otherwise like rx3 said i need to know where the crack was etc…