Question, Installing system in 00 Eclipse
 

hello everyone. i own a 2000 eclipse rs. i am installing a system in my car and i want to know weather or not if anyone knows if it is better to buy a capacitor for the system or get a new and more powerful alternator. also i wanted to know if anyone knows how many watts the alternator is ? and also would it be best for me to buy a better alternator and all ? and does anyone know any like aftermarket or anything i can get one, if someone can respond back and answer my questions i would greatly appriciate it
thanks alot
someone please respond
thanks