odometer and Trip OD W126 85 300SD

[jfarmer64]

Is there a good article on how to fix OD and trip OD? I pulled the Dash and am looking at a broken driver gear for the Odometer.

2 Questions...

1.) is there a good source to get this gear and repair?

2.) Can I take a cluster from another MB W126 (420,560) and use it in its place?

Thanks