I have to give kudos to all who post on this site regarding what you can do and what has been done to the IS300 from a tunes upgrade perspective. After reading through hundreds of posts on all of the combinations, taking my time to sift through the info, and before I made my decision on what option to pursue and what purchases to make, I have to say that using the Altezza Double Din dash opening gave me exactly what I was looking for from a stock perspective as this was my highest priority to solve before SQ. There is a slight color variation, but it is so negligible in the grand scheme of things considering I have two din size units now occupying the space of where the factory radio once was not to mention the factory texture of the Altezza piece. I don't have a digital camera, but I'll try to post as soon as I can. Two last things, the Utopia's were also an excellent recommedation as were the 2 Image Dynamics IDQ 10's. Now, if I could just get an IS430, life would be greater!! Thanks again - way more than happy with the daily drive thanks to all of the great information posted here by the regulars!! This is an awesome user community!!