Super Six fuel mileage

There you go guessing. You need to find out what gear you have. So far people here have been talking about how things work and you ain't listening.

Changing parts without knowing what is what. You're just wasting time and and money if you don't get the right combination of parts.
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Im currently at work, so im unable to go look. Im not just gonna go out and grab something and put it in. As you said, thats pointless. If im not mistaken though, the gear tag is gone. I know there isnt one on the diff cover. As for the other side, is it stamped or is there supposed to another tag?