Rear end gear size?

I am talking about the rear end in this 68 Barracuda formula S 340 car that I picked up. There is no drive train in it yet and yes it is a sure grip. The fender tag states that it came with a 3.23 but this car was a drag car back in the day and there is no guarantees that the factory gear is still in there. Eventually the rear end will be worked on, but for right now I want to find out what gear is in there hopefully without having to pull it apart so I can get things rolling on a nice torque converter.
Bob
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