I have a Goodmark hood on my Challenger. The fit is fairly close...though it is about 1/8+ inch wider than OEM, so the leading edge trim is now "too short". Another issue is the metal is a little thinner than stock, or softer than stock, so have to be careful closing the hood so don't leave hand prints in the soft metal. Another issue is I'm having to set the hood latch engagement tighter than I'd like to because at 75+ mph both leading edge corners of the hood are lifting off the rubber hood stops. You can actually see the front corners rising above the fender edges. This to me is another sign that the metal is too soft, the hood has too much flex.
In conclusion I'm trying to suggest take a good look at the used hood, because if it is usable you will be better off with OEM sheetmetal vs the aftermarket stuff. IMO.