7 1/4 rear 1973 (lbp)

Killer6 said
Should have a tag, but in case it was lost/tossed if the cover was removed, visual inspection or the hold one axle & try to spin the pinion are the only sure ways. Gear ratio is stamped on ring gear, if You're sure it's the original rear, the fender tag codes will call-out the ratio & if it's a SureGrip.

This is from the fender tag. Doesn’t seem to have any info on it. Didn’t get a chance to move everything around to get to the rear before work today to look for a tag. If I was a betting man I’d say it’s 100% original when I got the car from the original owner almost 19 years ago it it barely had anything changed on it from original. I’ll dive a little deeper to see if the tag is still on the rear.