Tranny broken, what parts will fit a 34?

[vincent]

The transmission of the 34 developed an unusual noise on the last run so I lifted the shifter plate. Found 2 partly chipped teeth. So now I need a gear cluster, preferably from the later years. My question is: which gears/shafts should I fit to repair the box?
I was offered a 1950 sideloader Mercury box. Will those parts fit my 34 gearbox case?
As always thanks for advice.
cheers, Harty