The Alpha's cast iron front diff....

[HummBebe]

Originally Posted by 03H3

I thought that this cast iron housing was the one originally built for the ZR2 Blazer, it was being brought back specifically for this application.

You only need the housing, you should already have the ring and pinion.

Yes, but they stopped production in 2003. I'm sure it's been redesigned as well. So technically, the application is the same, but the actual housing is different.