Hey Guys, Sorry guys, I've tried searching but i lack skills to find it, i do apologise if this has come up before. I currently own an A3 and was thinking of retrofitting an RNS-E but thought i really didn't want to spend $1000+AUD on an head unit So I'm deciding on retrofitting an Symphony 3 instead. I would believe would need Need to purchase adapters to convert the head unit and the radio antenna, as i would if i was to retrofit a RNS-E Am i correct? Would doing this excercise cost me as much as if i was to convert an RNS-E? Your help would be greatly appreciated. Thanks, Joey.