Why not go back to Hunter. You have the definate adventage that the manufacturer of tour yacht is still in business.
Help keep them in business and give them your business. You know you will get the right part.
Hi
I also have a Hunter 27 and replaced the bottom rudder bearing about 2 years ago about £6 from Hunter as I remember,
I am planning to replace the top bearing this year but it appears to be bonded in,