Here is the diagram for the linkage. What parts do you need.
The lever on the left is the one used on the 40 and 60 series with the five speed and our 4/85 four speed with the spacer. The one on the right was used in later 70 series to move the shifter lever in front of the transmission shaft cane. my search was for the one on the right. The left may have a spare one. These are probably common in Australia since from the 83 model on all 60 series had the five speed and all 70 series during the 1980s had a five speed as well.
The lever on the left is from a late 60 series. I know I have two of these and don't need two. Probably a rod that goes to the high/low lever as well.
Do not have any spare high/low levers or the stud that screws into to the transmission case. Possibly going to need one of those studs myself. These are different than the one used on the 40 series and pre 4/85 60 series. The guide is another thing I do not have any extras. Again because the boss was on the reverse gear part of the transmission case that sticks out it's different than earlier years.