Hello everyone, I am new to the forum, (having returned to Audi ownership after a gap of some years since parting company with my awesome 80 Sport), and have taken recent ownership of an immaculate 2001 A3 8L chassis 1.8T Sport. I wish to swap the Audi Chorus radio cassette out for a quality aftermarket headunit without altering the wiring, and I understand that adapter looms are available. The unit has a subwoofer in the rear, 'Bose' branding on the speaker covers and there appears to be an amplifier in the rear. I would like to make the best of the existing system and would appreciate knowledgeable advice on which adapter loom to buy and any suggestions for plug and play, or easy to fit improvements. Many thanks, Murray.