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Without looking.. just assuming weight plus flimsy = different parts than Steel plus stiff.. i would say replacement list would be...
1: A hybrid of parts to create the connection points to the hood (different) to the truck (same) .. its possible.. there is a point where this would be a direct fit.. just not AT the hood..
2: Im assuming different lift struts (or lift assist springs.. i dont remember.. does ANYTHING still have lift assist springs?)
3: Latch assembly.. or possibly just modding the one you have.. just assuming the heavier hood might have a stiffer latch connection than the aluminum one..
at this point just buy the stock tahoe cab and drop it on the hybrid frame. done.
Maybe install some fog/auxiliary lights?
Just noticed that the stock photo of the hybrid that you posted doesn't have door mouldings.
Yeah GM often photoshops the hybrid to make it look more 'stock' ... not only they have removed the moldings in that pic but they have also 'lowered' the rear.