Does a locked differential from Omega `98 fit in Omega 2000?

Hello, recently bought me a 3,0l MV Omi Bj.2000. before I drove a 3,0l V6 Bj. 98, had bought me at that time a locked differential, which however was no longer installed, because on the highway the pleulbar is broken. after every amount angrier and punctured with the Omega, I was sick and tired, therefore I bought facelift a day later, and forgot the diff. every day it came to me thanks to dhl again. I can the diff despite different year of construction I put it in my house, or doesn’t it fit? Hope you can help me. dear greetings klenne2007