With a rebuilding of the IRS out of the car Is it possible to install the half shafts 2 piece covers into their place after all other has been completed.
And if the IRS cage has been installed onto the car is it also possible to then install the covers into its position on the half shafts.

 

It is certainly possible with the wishbone connected to the hub.
I don't think you could with the shocks and springs in position.