I think the trick was to place it evenly inside the hatch opening a foot or two away from the tailights and then tilt the bottom of the panel towards the tailights, slide the bottom into the recess between the gas tank hump and the foor in front of the tailights, then tilt the top of the panel towards the tailights while easing the edges of the tailight cover into the quarter panel recesses shown in the picture above. I think I cracked the one quarter panel cover because I tried to initially slide the tailight cover directly down into the quarter panel recesses from outside the car with the left side of the tailight cover tilted down and the right side tilted up - I got the left side into place but when I tried to lower the right edge of the tailight cover into the passenger side quarter panel cover recess the cockeyed angle pushed the driver's side quarter panel cover outwards and broke it.