Please do a search on the forums on hood. Usually, the culprit is the hinges, as you will discover when you read the posts. The hood is designed to deform in crashes, so it is not stable when stressed. Thus shipping is a problem.
If you can't find a suitable one in a yard near you (you didn't say what year), try online at an autosalvage place.
http://www.autogator.com has been good for some members.
Otherwise, you must get a new one, and new hinges also, most likely.