I have a rns510 fitted to my mk2. I bought it off Ebay to replace the god awful looking oem headunit.
I bought the gps antenna off Ebay and also the aerial adaptor was purchased from ebay as the rns510 from a golf has a twin aerial port as opposed the single port that seat use.
I bought the fascia surround from my local seat
dealership.
The only issue I had was that I suffered battery drain issues as my car is 2006 and the canbus module was not compatible with the 2009 rns 510.
I swapped the canbus module for one from a 2010 golf which sorted out the drain issue.
I have 3140 update loaded onto the unit and v9 maps, quite old maps and software but it allows me full postcode search facility so I am quite happy with the software.
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