Headliner Question 68 Barracuda Fastback

I think I know the answer but is there any shortcuts to installing a headliner? Does the glass have to be pulled or is there another method? The car hasn't had a headliner in it since I have owned it(26 years) and I have one for it but I really don't want to pull the glass if it can be avoided.

The car has a roll cage in it but I think the bows will still go in OK, If I do proceed I will probably mock it up before actual install work is done.

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