Going to receive my Gen 2 CPS next week. Thinking of changing the HU to something better.

I have few questions regarding this:

1. Will changing the HU void the car's warranty?

2. The default HU is 2 din? Thinking of getting SONY CDX-GT480US HU, but it looks like a 1 din device. How to cover the hole below the HU if I opt to get this HU?

Sorry, this is my first car, and I don't really know much about ICE.

This post has been edited by mzaidi: Sep 3 2009, 12:44 AM