So are the console housings that will come with my b6 arms that I've just ordered not be compatible with it then ?
My plan is to build them up then I can just unbolt the steel ones off my car and then put the b6 ones on straight away to save time.
Not sure I follow.
Have you bought used B6 arms with used front bushes and used rear bushes? If so, all of that will bolt up fine, just would be a shame to fit worn rubber bushes.
If you want to reuse the outer housing for the console with a new S3 internal bush, my experience is that the B6 arms will be a tight fit and you may struggle without a press. I’m not sure whether that was because mine were Febi or because S3 bushes in general are tighter. So be prepared for some pain if S3 console bushes and B6 arms are being used.
Honestly I think doing what I did (B6 arms and new GTI Lemforder bush and console) is enough.