[kjp]

Well, after checking all the U-joints, rubber donut, etc. on the driveshaft - it all looked OK. I changed out the oil in the differential with one of a higher viscosity, and the problem is less noticeable. Something is amiss inside the axle assembly somewhere. Now comes the fun part of fixing it.

Questions -

Simpler or cheaper to swap out axles or repair it?

If I find a good later model 4.10 unit to replace my stock 1977 4.56 unit, is it a straight bolt-in process?

And is it possible to get any of the gearing from the transmission of the donor car that turns the speedometer cable? Just concerned about speedo accuracy here, if such a part exists in the Alfa tranny.

Thanks.