396 L34 water pump rebuild

[My68SS]

Hi crew,
Just in the process of rebuilding my water pump and just have a couple of q's for now.
Is the bearing pictured below the right one for '68 L34 - 3/4' shaft with 5/8' pilot?
Given the length of the front 3/4" section, it would seem that the fan hub presses nearly all the way on?
Does anyone know the hub's installed height dimension, from pump leg face to hub face?

[My68SS]

Can someone confirm that this is an original impeller from a L34 water pump?
Cheers

[big iron]

Rob,
Good part number.
Bob

Can someone confirm that this is an original impeller from a L34 water pump?
Cheers