Oil pump/intermediate drive shaft Bushing install

This has been my experience with the B/block bushings.
When MP released the 'performance' chrome moly int shaft, I bought one for my 440.
After not many miles, there was significant wear on the shaft from the bronze bush. That was because the CM steel is hard, but not 'hardened'. The original factory piece was really hard, like tool steel & works well with bronze bush.
I use a softer alum bush with aftermarket int shafts; they do not wear the steel & last ok.
Í see a similar situation with auto trans. The c'ter neck & yoke are made of hard steel, but not of the hardness of the shafts etc. So they use an alum faced bush, not bronze.