I have a pretty rare 4.1 ratio differential from a european E21 315 with 96,000 km on it.
Everything turns smooth and looks great inside. Price is $250.
email me for pics
thanks
Vlad

any offers as of now? and will this fit en e30 325i?

Sorry I don't know if it will fit an E30. If you want it the price is $250
thanks
Vlad