Radiator Core Support is not exactly the same as 71.
The 72 Core support has the extra
clearance needed for the 72 Grills to
Below are two nice 1972 H/O cars:
The 1st car has a 1972 Core
support. The 2nd H/O has a Core Support from a 1971 model:
1972 vs. 71 Core Support with "S" Grills