you can of course use a new bonne'* head unit.. but you still won't be getting aftermarket features/looks/quality/performance.. things like that.. if you don't mind me suggesting though.. I was going to get a regular head unit.. and fab up a box [using those cheap plastic ones as a template], and it would probably be of wood.. or perhaps wood with metal face.. or something.. whatever.. doesn't matter the material.. as long as you can handle it, and form it to the way you want. Well anyways.. have the head unit mounted up, with space at the bottom.. well I have a what I belive to be a 60'* bonneville emblem.. its black, with silver lettering saying Bonneville, with glas atop it. Well, its just the right width for this at the bottom, so i'm going to mount it in the space between the head unit, and the bottom of the dash panel, giving it a clean look, along with a nice tough of individuality. Plus it won't be too expensive.. so that will be just that much more of a bonus.
PS: non conformity rules.. but the real nonconformists are c0nFoRmIsTs Of ThE n0n!