65 Barracuda rear window tinting

I had some windows in my building done 4' x 6' one piece no problem,
I know you wont like it but i would take the glass out do the tint and reinstall it.
I have a 64 cuda and have had the window out at least 5 times.
What method do you use to install the window. I have mine out, but not sure how I'm going to get it back in!