Sun/Moon roof for mustang

I have really liked the new design over all for the new mustangs especially the V 6's. Ford finally got smart and gave a dual exhaust for the V 6. I really like the glass roof thats optional but its limited. I have seen sun roofs on older mustangs before and I would think it would be cheaper to install a sun roof opposed to an all glass roof? I think this would look great plus add some flair. Keep up the good work Ford!