A DIN sized radio will work, be careful cutting the dash. I tried to contact the major suppliers, Kenwood, Sony, Pioneer & JVC on their websites to find out if their CD units would work if installed vertically, none of them replied after a week, None of the local salespeople knew the answer either so I went with a Kenwood am-fm cassette with a dedicated 6 disc (10 is also available) changer to mount with the amp in the front trunk. Hall sells a unit (Kenwood, I think) that they claim will work vertically and when the radio is off it has the radio delete plate. Sounds nice but kinda pricey about $475, I got my radio/cassette, amp and CD changer for $485.