[meford4u]

The roof in most Fords have, for better lack of words, splines that attach themselves to the bodysides every 8-10 inches. I think they take out 1 spline to install the sunroof. The only problem I could see is where you intend to put the 2nd rear sunroof, the spline above the rear seat, where the rear of the back door meets the rear window, is integral to the body shape and construction of the car to alow for some flex, but at the same time stiffening the structure of the body sides and roof. I'm not the engineer here, but I think that any 2nd sunroof would cause a structure problem because of the removal of that spline.