I will have mine off both later as I am going to wash them. I can check it then.
First picture is of both on correctlySecond one they are swapped over
Third is close view of front
600 tank is taller and longer, the 600 cover will fit the 1000 tank but cover will be rubbing the frame enough to wear through the paint at the headstock and the the tubes under the seat near the rear of the tank