When in doubt change it

I am putting a new head on my car. The old one had a crack that leaked just enough oil to be annoying. Am changing out all of the hoses, rotor, cap, oil pressure sensor, etc.
I am pulling the Ford drive shaft and replacing it with a reconditioned proper 2 piece shaft. Am changing out the gasket on the oil pan.
Have decided to change out the rear axles.
She should be real nice when finished, that is when the parts arrive.