Welcome to the forum cclingma!
You might want to enter the model numbers into JD Parts and compare the exploded views if you have not done so already.
John Deere - Parts Catalog
I don't know either way myself but but since your going from gear to hydro it might be one of those little projects that seems simple enough on the surface but develops into either a personal mission of love or a nightmare depending on your spirit of adventure before completed.
You might want to enter the model numbers into JD Parts and compare the exploded views if you have not done so already.
John Deere - Parts Catalog
I don't know either way myself but but since your going from gear to hydro it might be one of those little projects that seems simple enough on the surface but develops into either a personal mission of love or a nightmare depending on your spirit of adventure before completed.