neilroy,
here are some things that you might want to consider. The original straight back AD radio has the control face which is parallel to the back cover. Therefore the radio slants backwards when installed to give the correct angle on the controls. That also means that the top of the back slants down, out of the way of the wipers. In addition, the base is only 4 3/4" in depth. However, I don't know if the base depth would be a problem