This rod bridges the gap between the trunk lock cylinder and trunk latch. It is held in place by the round spring that attaches to the back of the trunk lock cylinder. Ford part number C7SZ-6543283-A. 1967 - 1968 only.
Check out our video below showing how to easily remove and reinstall your 67-68 trunk latch, lock, and cover plate, and some info on getting a new key made.