Gurus stop glaring at me with disapproval.
:ermm::Whistling: :D
Load your new better prop. Get xyz location and rotation of Ship 1, enter into Ship 2.
You have an Align function for that. Right mouse click on a new prop > Align > Align To and then point to the old prop and click on it.
Then check all boxes. Select Pivot (if it is at the same relative location for both props), or Center.