Yuki used to sell this pro hunter 16610 as a kit in their website many, many years ago.
Considering this is an old school rep with flaws that are unfixable (e.g., the wokky rehaut and the wrong date window location (hence the ETA date disc font)), I suggest leaving it as it is or doing minor modifications to it. Minor modification might be upgrading the hands to rafflestime ones (
http://rafflestime.com/white-merc-submariner-watch-hands-for-eta-2824-2836-metallic/), for example.
Comparatively, the latest ARF 16610 with vr3135 movement is far superior right out of the box for 498 usd. Therefore, your budget devoted to modifying/ improving your pro hunter 16610 should be comparatively limited.