Upper Trunk Panel Question

Greetings!
Been fixing back end rust for months now on my 67 Dart. Both Quarters are off and will be replacing with full new ones from AMD. Upper trunk filler panel is also off and I have the new AMD panel ready to put on. Is the proper order of things to put this panel on first, then the quarters? I’ve been learning as I go here so any help is appreciated.
Thanks!

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