Tay- I have been observing posts on the bulletin board for a while now ,and ,for the most part the advice is great ,so I usually keep quiet .But , after observing this ,I felt compelled to respond...
First of all ,Camaros of almost ANY age are a combination of unitized , and regular frame type construction .From the cowl back these cars are ALL unitized construction .That is ,ALL panels should be considered a part of the structural integrity of the car .
I may be wrong , but personally, I would never glue ANY panel to this that is anything other than strictly ornamental , or , a very minor patch panel .The people you have talked to are partially correct...there are many panels that can be glued on . But , considering the panels you want to replace , in the areas that you are talking about ,especially on a Camaro Z ,do yourself a a favor and err on the side of safety .
Sorry I got so long winded, but felt this needed to be said.
Thanks, and good luck in your project !!! F1 Owner