Take your hood off and stand on a bathroom scale. That is what I would do. By the way, the "shipping weights" on these parts are no where that I know of because they are shipped in bulk to the dealer. Sure, they get UPSed once in a while, but that info isn't kept as far as I know. Besides, it would include the PACKAGING!
You want to find out, take the parts off and weigh them. Can't get anymore accurate that than.