Yeah the grille is typically going to be damaged pretty bad so replacement is likely. So the grille would be the one to sacrifice. But if the grille is nice, welding a hole backup in the hood, or fender would be easier to repair. But coming up from the bottom cutting a hole in the splash panel would be the best way to go I would think. Chopping a large hole in it with a die grinder and going up thru there sounds like a good way to go, the panel could be repaired easy or pick another one up, a heck of a lot cheaper than the hood I would think.