Help me identify my spindle

The above would be true "IF" the seller sold you spindles for a 1972 back A-body but the seller sold you something that he said also used 11" brakes so I won't go out on a limb and say what you have until I can say with certainty. Hemi71x is a brake guru and I have learned a bunch from him and with his comment, it appears he thinks like I do.