Guess on gears in a '74 318 Duster with 8-1/4 rear

If you had to guess, what gears are in the bone stock rear in my 74 Duster?

The car is a factory 318/904 car with a fresh mild build 318 and a stock 904 cleaned up with a shift kit in it.

Sadly there was nonfender tag and the mice shredded the build sheet under the back seat.

Trans has the stock Mopar high stall converter in it. Have not really driven the car on the street other than a spin around the block yet but I am getting close to that point. I'm wondering how it will behave...
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