Rockwell T221 Speedo gear tooth total?

[CKfan]

Picked up my Rockwell T221 N5 and SM465 that I had rebuilt and dropped it in today. Had the shop go through everything. Instead of tanking the cases we hand cleaned everything with degreasing agents to save the original paint and markings. Came out looking the way I had hoped.

They said the transfer case was in pretty good shape so things went fine...... except the speedo gear was/is missing from the case. Really!

I am trying to find another but have no idea which one to look for. 11 tooth, 17, who knows? Not my strong suit and the shop said it would take some research but it is related to the gear ratio??? So, here I am. : ) Picture #1 shows what I am looking for but tooth total is unknown

On the plus side of this, I am glad they were honest and told me. When she gets back together and my speedo didn't work, I would have been tearing into everything from the dash down.