aftermarket sunroof

[vanbeis34]

I have a 1996 240sx that I bought a couple of months ago. I knew the sunroof needed a new motor and in the process I found out that the sunroof was not factory. Although in asking Nissan HQ the vin said it had a factory sunroof to begin with. I searched the car and found glass remembering the car was broken into. Insurance company must have used a cheapie instead of factory. It looks like they cut out the old motor bracket. (by the way hollandia-webasto makes the roof). I want to go back to factory despratley. Does anyone know how this might be done? Also does anyone know if their headliner is molded all the way around or if it just sags in certain areas?