I'm looking to replace the stock Mark Levinson head unit in my SC430. Are there any radio dash kits for it? I've only seen kits for the GS and IS. Anyone know if these will fit?
Autoys Dash Kit
ClubLexus Forums - JDM Dash Kits


If not would I be able to replace the stock Navigation Monitor with a double DIN monitor like this one
Kenwood Excelon


Here's a pic of the SC430's headunit
http://php.motorcities.com/image/ind...73995673G.jpeg

Will there be any decrease in the sound quality if I keep the factory amp and speakers and just replace the head unit? Thanks