Ok due to a change in plan I have an RNS-e and bits up for sale, I have everything you need for it to go into an A4!! So you can buy it all, or separately!
RNS-e Unit
This is a 8E0 035 192 T Audi A4 Europe, MY 2008, 8E B7, sw 0650
It has AUX in activated, in excellent condition, comes with...