Headunit in glove box?

Hey guys i got a question.. My buddy has a extra headunit he is using and i would like to put it in my 72 duster but i dont want it on the dash because i want it to look all original. Anyways i dont really have a glove box i just open the door and nothing is there... Has anyone ever made a mount and put a headunit in the dash before? I was thinking about taking a piece of flat aluminum and just putting it in there (havent looked into how to mount the aluminum yet) And put it in the glove box and the dash look stock but then i can have FM radio also and use cds. Has anyone ever done this before or anything like this? Any help or ideas would be awesome! Thanks!!