w724prg

I have recently come into poissesion of an Audi Concert II CD Radio head unit from the US does anyone know if it is a "straight swap" for my broken UK based Audi concert in my TT ??. The connections on the rear of the units are identical although there appears to be no connection for the 6-CD changer.I am aware I may have problems with the FM radio reception...New to Audis so many thanks for this