This is out of a 1994 Silverado four-wheel drive. I have two or three different differentials like this. A 97 and 99 and a 94.
I don't know the gear ratios. You will need to come check.
This one is out of the vehicle and the others are still in the trucks.
Tons of other OBS parts available and some newer Parts like a 2011 Silverado and an 09 Avalanche.