Another Rear Axle ID Request

7 1/4. Might live a good long time behind a mild 360 with an auto with a stock converter, and true street tires (NO DRAG RADIALS!!)
If it were mine..... I'd start shopping for an explorer 8.8 to narrow and put under it..... but that's just me.
The future plan for the car is not the 360 or the 727 auto. :)