I'm just centering the differential. The pinion still sits to the one side about that 1-3/4 your taking about.
I have the drive shaft flange that bolts to the rear end. I just need the conversion u joint from it to the drive shaft. I've heard they're stronger, smoother, just alot more modern benifits.
It's at the other end of the shaft from the picture, but you get the idea.
Jake