yes, they are the same exact cars the only differences are the front headlights and grill and the tail lights otherwise the cars are pretty much the same. so yes, a 73' nova hood will fit a 70'
No
not without modification
It should as it's basically the same body.
yes
Yes
Yes.
NO, they are two different body styles
No, they are 2 different bodystyles
Yes it will bolt right on.
No, they're 2 different grilles
Yes.
Yes!