Anything 3rd Generation will most likely need a CAN BUS upgrade.
If you're looking to not have to upgrade it, any 2nd generation is direct swap. Ie/ RCD 300, RCD500.
What are you looking to get out of your headunit? 6 stacker? mp3? GPS?
If you got the RCD310, It probably wouldn't be worth it money wise. Plus, It's hideous.
This thread might be of use to you, I used it when I upgraded:
Upgrading 2nd generation radios (RCD 300, RCD 500) to 3rd generation (RCD 210, RCD 310, RNS 310, RCD 510) power drain issue | my-gti.com
I look at my V-Dub, and all I can think is....."Dat Ass....."
Bookmarks