hey all, im in the process of trying to get a box built for my car for 1 12" and a 1500 watt rms amp. i would like to know what i can do to the car to get the voltage up to meet the demands of the car and system. i need a battery NOW cause mine is dead so what is a good one to go with? read too many bad things about the optimas so they are probably ruled out. also what alternator do i need to go with and how many amps? i would like to have a constant 14 volts at least if that wont bother any of the electronics in the car