So, I've had my GXP since 09. Love the car. She only gets maybe a couple thousand miles a year. Anyways...I couldn't find any info comparing the GXP and the non GXP. I know the engine is different, GXP is turbo, and the few cosmetic differences. Anything I'm missing? I've heard some say that the rear end in the GXP has lsd, where as the non GXP's don't. What about suspension? Anything else I'm missing?