i just got two alpine type r 12 2 ohm and a custom ported box specified to their specs. I dont know much about car audio so i need help picking out a good amp to make them pound. should i use one Kenwood Kac-9105D 1800-Watt Class D Mono Amplifier or two Kenwood Kac-8105D 1000-Watt Class D Mono Amplifier? both options are right around $200. i pretty much only listen to rap if that matters or not. Thanks for the help any other suggestion for my system are appreciated.