Hi Vinicius,
nice to see you here! You are in my PLUS-drivers-list since a long time...
Yes, it works, it´s possible to change the Delta to the Concert. But if you have a BOSE-Soundsystem you will have to look for the speakers, because they are active. But the Concert normally needs non-active speakers. In Germany it´s possible to buy special adapters...
Oh, you can´t use the Delta CD-Changer with the Concert!