c0rs4, thank you very much for your answers!!
But if i'll decide tol upgrade my TID to CID, which head unit I should use?
Regarding GID/SID - are they suitable for Corsa from another autos? Like Astra, Antara, etc. Or I should look for special Corsa CID/GID?
And could you please give me a link to ebay with one of these? Cannot find 
Danke 
Hi Guys,
Sorry if I'm posting topic in wrong place, just I don't speak German at all
Unfortunately I can't find information on English/Russian sites, so I will ask for your help here.
I have an Opel Corsa D 2007.
I would like to upgrade my head unit from CD30 to CD70 Navi.
I have a TID display.
My questions are:
1. Can I upgrade TID display to CID?
2. If yes, where to buy them and which ones are suitable for Corsa? Can't find on google.
3. Can I upgrade from CD30 to CD70 Navi if I will install CID display?
4. Is CD70 Navi suitable for any Opel car (Corsa especially)?
Thank you in advance!
