is their anyway to prevent water cavation or whatever its called? does it happen if the water pump housing is rusty and stuff inside or does it happen even if u have a new water pump housing? cause i have the double sleeve alternator pulley but still overheats whenever hailing ***. still havent gotten the main underdrive pulley! will it make a big difference? i know it adds HP but does it make a difference in the over temp of the car? and is it an easy bolt on or do u have to do something special cause i remember somebody mentioning something about the eccentic shaft can be damaged or something like that what u guys think? also can i use the power steering with the main drive pulley or do i have to take it off