Excuse my naivity.. i have a '02 SD that I wanted to add a few things to... namely real spoiler, a better stereo system, xenon lights and navigation system (over time ofcourse). However Lexus told me that none of that is available from Lexus as an upgrade and only comes factory installed. I was warned to not use aftermarket Xenon lamps as that would void the warranty and the spoilers would damage the body etc etc. Looking at MrSypher's mods I think I will give it a shot.