ok so another quick question is...right now he has a hifonic brz1200.1d on 2 skar vvx12" wired to 1 ohm in ported box and a powerbass asa400.2 2 channel running 2 ohm each channel to power his polk audio inside speakers.. right now he has stock alt and battery(1999 buick century) .he can only get alt or battery first then in 2 weeks the other which should he buy first..i told him prob mechman and xspower for them but not sure which one..prob put them in same day so i guess im answering my own question lol.but if he puts items in seperatly which would you buy first ? alt or battery? and will he need another battery in trunk? prob just led's later but no ther equiptment will be installed after alt and battery