Hey Andy, I bought an AliExpress one 4 years ago and it's still doing fine. I fitted a NoName Mk6 headunit with carplay and it went straight into the factory input for a camera. I can't recall if my RNS310 that got removed had one or not but the 510 might? Or you might need a interface box to make that happen, and then also VCDS to code it in. I did have to 'finesse' part of the rear wiper metalwork as the fixing for the boot handle/camera is slightly different since its MK6 stuff, but it's by no means a hard job to fit.
