Hello,
I recently bought a welded diff off marketplace. Seller told me that it was off of a m/t Z. Looking at it further Im kind of concerned it came of off an A/t ( I have a MT want to keep gearing) . When i cleaned the pumpkin I saw it has “GA” painted on it which I believe came on Autos? But it also has 4 bolt on propeller shaft flange which I read is on m/t? Ill attach photos below. Any help would be appreciated!

 

did you count the teething, probably be the easiest way to know the gear ratios...

 

Okay i counted teeth! Unfortunately its 47:14 so geared for A/T :/ . Thanks for advice though!