electrical upgrades

I have a 2007 Monte Carlo LT. Nobody I have found makes a high output alternator for my car. The local alternator place says that they can't make mine better(I'll see if there is another one to try). So I am now looking at alternatives to a better alternator. The alt place says that an...

Okay building up a new system and this is basically my first somewhat big system, just wondering what electrical upgrades Im gunna need. Im going to have an sp4 15 wired down to 1 ohm on a Crescendo BC3500. These are the electrical upgrades i will have: optima yellow top in the front and an XS...