Stock hoods are divided by the following
73-78
79-80
This is the difference:81-87(91)
Hood latches are broken down like this
73-74 (this has the release in the middle)
these are the one that are offset
75-76
77-80
This is a completely different setup.
81-87(91)
1977 was the first year for the underhood latch release. The latch can be used on any 77-80.