transmiossin problem

[francisco]

hello people!!!
mi name is francisco and i am from uruguay
first of all say hello and thank for let me in
i have a 1999 galant vr v6 aspirate (6a13)
i have a big problem with the transmission (manual, f5m42)
it was very noisy so i put it dawn, when disarmament, i saw that grear 4 and 3 were very worn. i can not find a new one.
i could find some gearbox from the previous v6 (2.000cc) but i do not know if the gear is the same.
thanks a lot!

[francisco]

don`t know if you can se the pictures.

https://imageshack.com/user/Franlebbo