Question about Lancia Delta.

Does anybody know if the aero piece on the roof is really a cover for a roof vent or if there should be hole under it. I would like to open it up if it is a roof vent. Any help would be appreciated. I am referencing part K10 on this instruction sheet.

http://img27.picoodle.com/img/img27/4/6/8/f_10000346z5m_e01de6d.jpg

Which rally are you modeling the car from?

Depending on which rally defines what it is. On rally Australia 1991 it was a clearly defined roof vent, on Safari Rally, it was a vent which could be lifted so if closed it looked like an aero piece yet could be opened to varying requirements.

Thanks for your response Ray, I have the Studio27 decals to do the Monte Carlo version. I had to bend the part to get it to lay down flat on the roof which it would be when closed. I might just let it closed and not worry about it.