Ok, the links helped a little... I just called a parts store and asked them and they told me that the bearing from 79-88 or something is the same and from 88-94 there was a different bearing.
The lady gave me all the dimensions of the bearing and I have the smaller one I think.
Here are the specs I found.
From 79-88
ID - 1.378
OD - 3.15
Width - 1.1635
Newer with 3.0 L engine.
ID - 1.378
OD - 3.503
Width - 1.5055
The one with the 3.0 L is larger, not smaller. Does this sound correct? I looked that the two pinions together and they are the same length all together, except the sleeve spot for the inner pinion bearing is longer.