What is my pinion bearing size size

What is your question?

I have an 01 Kia Rio and am needing to repair my standard transmission but I don't know If my pinion bearing is 19.25 Mm wide or 22 Mm wide the manufacture date is 02/2001

What makes this problem better or worse?

The faster my speed the louder the noise

How long has your 2001 Kia Rio had this problem?

Few weeks