They are the same front and back, though the screening makes the back ones look like woofers. If you're going to buy new door and panel units, make sure they will fit properly (depth, space,etc.) Some speakers may not fit properly if they are too wide in the back. But most speakers have enough clearance to make it. If you haven't looked at Crutchfield on the internet, they are very resourceful and will suggest the best system for your ride. I couldn't be happier with the setup they made for my car.