chop13 back window sides and top cut. 4 inch above rear window line. This line is straight and does not follow rear glass upper curve. Side cuts are 1 and 1/2 inches from top of drip rail.. again straight line. The side cuts are above the inside short top to bottom braces on the inside of the roof. The side cut also goes right though the joint where the long left to right upper window inside brace meets the short side top to bottom braces.