evening Shmokica,
have you tried ****** Performance,
https://www.********.au/store/index.php?cPath=4_51_180
If you have a look on the clocks & speedo parts G2 under the MC21 or try the above link. Part 21 speedo drive bush AUD $6.03.
also the speedo cables are in the same section.
Hope this helps
Mark