Gkn Overdrives

Hi all, I am new to this forum.

I am trying to find the gear that goes into the transfer case but with 28 teeth to fit overdrive to my classic Range Rover, this is for the gkn overdrive.

I have tried Devon 4x4 but struggling to find anything, any suggestions would be welcome.

Thanks!

Have you looked at Ashcfofts
https://ashcroft-transmissions.co.uk/