AFAIK (G4 owner) the CANBUS support came along with the G4+.   G3 could be software upgraded to be largely G4, G4 can't be upgraded to G4+ sadly.

What did link say about canbus on g3 with g4 firmware?

I did, but nice ones were double what we paid for the Levorg, and already having a Golf I know what they cost to fix so not worth going for a cheaper one which is still at the edge of our budget anyway.

Hi, Did you consider a Golf R Wagon ?

I've got a Link G3 and was wanting to run a digital dash, need an ECU upgrade for that though. I quite liked the look of Ghost Digital Dashes