can anyone help please?

I have a "Navigon bluemedia 6300" which is a great system when compared to the Evesham, which is basically rubbish..

however the casing has broken (inside and needs to be replaced) I have the same model in the "evesham".. I need to find someone who can remove the insides of the Navigon" and transfer it into the "casing" of the Evesham..(they are the same..) can anyone assit, willing to pay..any reasonable fee..