questions about SLK 55 AMG???????
 

Hey, guys. im just in the process of buy a 2005 slk 55 amg. I have a few questions that I was hoping you could help me out with. Does anyone know if there is a navigation upgrade? Also does anyone know how much it is roughly to install new carpet? My last question is, is the little amg emblem on the seat replacable. this one almost looks oxidized or something. Is just the piece it self replacable or do I have to replace the seat?

Thanks!