I recently purchased a 03 LS 430 and love it. The only problem I have is at least one blown speaker (ML audio and nav system). Local shops want to replace the front door speakers with sony or pioneer without looking up any specs or at the speakers themselves. They say this will work unless the speakers are self amplified and the will check that when they start to install. It seems to me that they have a few speaker types they like to use and conceder very little besides the size of the mounting. Dose anyone know if the ML speakers are self amplified or, better yet, know of good replacement speakers to match or improve the factory sound without replacing the amp?