How many amps does a stock 98 alty alternator put out? My rockford amp just died, and i need to know how big an amp i can get. Also, any suggestions on what to power an Infinity perfect 12.1? I am thinking a Candence A5HC (so damn effecient), or a pheonix gold Ti400.2 (so damn expensive), or maybe a JBL 400.1 monoblock (so damn cheap).