A 1972 front bumper will not directly fit a 1973 Nova without modifications. While the two models share a similar design, the bumper mounting brackets and alignment may differ due to changes in the body structure and design. It's advisable to check compatibility or consider using the correct bumper for the specific model year for the best fit and appearance.
No.
Yes it will bolt right on.
About 20 years.
No
Yes, they are.
Yes.
Yes. The basic front fenders are the same and interchangeable for 70-74 Novas.
Yes
with the exception of the bumpers & bumper brackets they are identical
No, the brackets & everything are different since the body changed that year. The 73 has that wide strip between bumper & body so the curved sides longer to take up the gap. I think wheelbase also changed slightly. The 73/4 are the same.
Not without modification. The 1973 and 1974 body styles are unique in the Nova series.
under the front of the car.