The cowl overspray on this blue car looks original. Some NOR cars have no stripe overspray, some have lots. My Z has it light on one side, almost solid white on the other.
Are the corners of the hood just sitting on the cowl when he's taking those pics?? It's not bolted to the hood hinges.
Looks like someone steamcleaned the engine bay. That removes more than I'd want...
I'd rebuild that motor and drive it. Not sure I'd do much else.