Fiberglass over the engine compartment is going to warp all to hell because of the heat. A good example of that is the trunk liner.
If you don't use all of the fasteners then the heat of the engine will warp the fiberglass liner to the point of the the dzus fasteners no longer lining up.
I don't know about the front, but I do know from other vehicles that the fiberglass will warp in the heat of the sun like in Florida or Texas.
Just a consideration before you spend lots of time and money on these.
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