67/68 barracuda rear window pull, reseal, replace question please

So
Hello, First time posting. Hope this is how it's done. Recently purchased another members 67 FB. Rear window leaks. Has a new seal. 68 style I believe? ( just looking again and looks like there is a locking strip so may e its a 67 style? Posted a
picture) and it has new 68 clips and SS trim. I do not think any sealant was used/added into the groves when installed so we (Apple Auto Glass) and I intend to remove, add sealant and pop it back together.

My question is, can this be done without removing all the trim inside that goes around the window? All the black shiny metal pieces? Looks like a big job to remove all of it?
Any comments most welcome. Thanks!

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So correct me if I'm wrong but you want to repair the leak from the inside and not from the outside?

If you are removing the trim and popping the glass out, it can be done without disturbing the interior.

Inside will require significant but easily done removal of all the metal interior panels and the back seat and hinges if its a folding seat.

I would use a garden hose and identify where the leak is before doing anything. My guess is a bad seal even if its new. That corner you are showing looks suspicious already.