'75 Plymouth Duster NHRA Funny Car rear window question

Hi,

I just bought the Tom "The Mongoose" McEwen '75 Duster funny car 1:25 scale model, but I am having a very hard time finding detailed reference photos of the real car. The main concern I have is with the rear window. The kit comes with a vented window decal, but I do not know if it is accurate to the real car. I have built kits before that came with a vented window, so I found it odd that this kit came with a decal. Does anyone know if the real car has a vented window, or is it really just a decal? I would really like to scratch build a window to make it more realistic. 

thanks,

Carlos

Source: http://cs.scaleautomag.com/SCACS/forums/thread/970609.aspx

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