i have a 2008 dodge caliber with factory 120amp alt. i have a factory installed boston acoustic 8 speaker system, i think its 450watts (probably peak) rf t1000dbcp on a rf t212d4. is there a ho alt that you could reccomend? or level of amperage i would need to safely run this set-up? no competition just daily beating. thanx in advance. oh.. and maybe a ballpark quote?????