I am not sure, but I know once you install the wing the trunk will not stay up, I am not sure what needs to be done when the weight of the spoiler is on to keep the trunk open?
Maybe someone can fill you in there also..
George, if I see one at Carlise I will pick one up..Even if you dont want it I can use it as a spare for my 69 dart conv..I will let you know if I see one..