I can't find the picture now but there is one around here somewhere of the bare metal frame of the hard top and there is a metal bar going front to back directly in the middle of the roof. I know it won't compromise rigidity too much to have a sunroof but it will be eliminating this bar which probably has some purpose of stiffening. I kinda like the sunroof and think it looks good on the cavaliers and cobalts at least when fully open and if I get one I will like most other people say only open it to vent with the windows and not fully open it. Also the "Shark fin" antenna is in the swept back position not only for looks but to avoid contact with the glass.
I still can't decide, reverse mohawk
or sunroof
I need to base my judgment by seeing it with my own eyes.