Shoutbox

I take it you'll be getting new speakers too? You have a Getz. Don't even bother with a sub woofer. Not worth it and anyone who puts a sub in a Getz or Excel or something is a goose. Just get some nice 6x9 speakers in the back and they'll produce enough bass.

I rate JB Hi Fi for car audio. They have a lot of stuff there just go in and have a look what catches your eye out of those that meet your requirements. They also have good prices.

Before you head in, think about whether or not you'll want a front Aux. Some are at the back or side, and generally that means you'll need to leave your cord in there 24/7 so if you need it for other things it could be a pain.