Is that one Titanium shell, ...early in the morning and brain not awake.
They are expensive to get the same.
The original code is Y32T9801http://www.moruyabicycles.com.au/conten ... /d769.html
You'll no doubt be able to fit lower quality freehubs on of a similar design, just get the 'shield' seal the same size, they do vary in seal diameter and a big pain to change
It'll be heavier, it'll not have the nice bearing race, it'll work though.
You could take it off and pull the seal at the back and flush then lube Ti see if it works.
Most freehubs 'wobble' even my new m770 does.