What you are saying is you want to install the window now, then later remove it to do the headliner then reinstall the window again?
I'd say yes if you are careful in removing the window. There is a risk of damage to the glass and the rubber.
Why not just get the headline done before you install the windows?
I'm trying but I need to address the glass and trim. My body guy is welding a couple small holes up now. The headliner is ordered but the insulation is in stock and the HL isn't. With a guaranteed delivery date of you'll get it when it shows up. ;)
