you dont need to buy a 200a alternator you already got one, well atleast i do

, when i had autozone test mine it put out ~197a, i was like WTF it is a 130a alternator, the guy was like i dunno

, even with the output that high, if it really is, my lights dim really bad at idle, so sometime in the near future i plan on upgrading the wiring like someone said above, see if that helps if not then i will replace the damn thing