Abstract: A hatchback or liftback closure having a frame member and a body member fixedly secured thereto is provided for retrofitting to a motor vehicle. The body member is integrally formed by a roof portion, a window portion depending from the roof portion at an acute angle greater than 60.degree. and having a window therein, a rear deck portion extending from said window portion in a substantially perpendicular manner and side portions extending from said roof portion a predetermined distance and uniformly arced along substantially the entire length thereof to the rear deck portion where both side portions terminate.