So I was thinking of getting this:

http://cgi.ebay.ca/ws/eBayISAPI.dll?...STRK:MEBIDX:IT

Two questions:

1. Since it is a euro unit, can someone with STAR and developer mode configure this unit so it can support SDARS/Sirius?

2. I have a 2005 Audio 20 unit in my C55 with HK. Will I need to swap out my HK amp or will I just need to have the new Audio 20 coded to work with it?

I found lots of info on the Audio 20 to NTG 2.5 Command retrofit, but this is different since it is basically just an updated Audio 20 unit.

kinda same question here. I bought a NTG 2.5 from a 2010 G55 AMG and am planning to put it in a C55 but I dont know exactly what I will need. So i guess this is a BUMP. and please people dont refer us to the e-class (w211) thread.

As for your question man, i do know that a euro unit can be reflashed to USA spec and with USA maps. requires a code. I seen the menu before. Just need to find someone to do it.