Car System. What amp do I need?

Good_Tymes

I bought 2 10' kickers comp (4 Ohm) but im only wanting to use 1 in a closed box I have for right now. I have no idea which amp I should buy as in Class A/B, D or which ever there is. I want to be able to use the subwoofer at its fullest potential without busting it. The subs are 500watts each. I was given a SCORSCHE 1600 watt high power amp wiring kit with DIGITAL CAPACITOR. Looks cool but no idea what this is... im reading up on this as I post but would like y'alls opinions. Also I was wondering which type of speakers should I replace the factory. They sound busted and raspy. Lookin for a clear voice coming thru my speakers.. Can someone please guide me....Thank you

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