Factory Nav options, body kits, and spoiler.

Hey guys, new to this forum and I love it.

I bought a 2001 CLK 430 Cabriolet about 6 months ago and was waiting to sell my old car before going full-bore on the CLK. Well, my car is now sold, so time to have some fun.

I am hoping to get some advice for those in the know.

Nav:
Are there any factory NAV options for this car? If not, are there any that will allow me to use the controls on the steering wheel?

Spoiler, check this out. It looks good, but does anyone have any experience with this:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=7950253664&rd=1&sspagename=STRK%3AMEWA%3AIT

Body kit:
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=7950359031&rd=1&sspagename=STRK%3AMEWA%3AIT

Then, all I will need are some 19" wheels and I will be set.

Feedback anyone?