It's been too many years, so I don't remember where I got it. My "stock eliminator" 65 Valiant had a 3.91 SG 7 1/4 rear.
Direct Connection, back in the early years, also listed 4.56, 4.88, 5.13 gears for the 7 1/4. It is possible also a 4.11 but can't verify that.