Hey so im about to start my latest project now that i have the money to play with, i just wont be eating until my system is in which is ok, but i am lookin at 2 Btl 12s bout 1500w a peice, so im going to need an alt. right? problem is im having a hard time finding one to fit my car...if anyone can help...and i already have a yellowtop bat. should i get another?