So I have a series of questions I hope I can get some of these things cleared up
Blackstar Upholstery(soon 2B sponsor) is redoing my entire car seats Dpanels headliner every thing Black with bright blue stitching and Carbon Fiber (wood) trimming . After that I will get the car wrapped by Diamond black Exteriors Im thinking of having them make a Satin Metallic black, with Blue ascents and possibly a euro stripe. So now I need to get my cars sh1t together...

1. Alright so my 280 is running kinda sluggish its acceleration is what it was when I got it 2 years ago or hell even mid last year. My mother and I are thinking it just might need a tune up and an Oil change. What do you think?

2. A friend of mine has a W212 E350 and got some AMG wheels to put on it, so he has his stock wheels just siting around, we got to thinking yesterday Would his stock wheels fit on my C280?

3. Would it be recommended, to upgrade the Radio to a a nav system?
3.5. Speakers. What should I look into for new speakers.....I kinda want a sub nothing too over done but some thing to sound better.

4. Body kit is there any where in the US i can find one of these two kits: body-kitz.com/contents/en-us/p2050.html body-kitz.com/contents/en-us/p2049.html. or just a better price....