Do not increase the sizes of fuses. They are those values for a reason - safety. The reason your deck resets is that during loud kicks and heavy low frequency sounds, the amp draws huge amount of current from the electrical system, ultimately dropping your car system's voltage, to a level low enough that the deck shuts off, and when the voltage returns to normal, the deck turns back on. If you do not have a capacitor (typically, 1 Farad in size) I'd recommend getting one installed. The capacitor helps by providing the additional current to supplement the current drawn by the amp during those hard loud kicks. I am not sure if a higher capacity alternator is available for the sunfire (but checking with auto parts stores should yield some findings)
