I can almost guarantee Ti studs were originally used for weight issues. During a period of time during work on the CH148 production modification SAC was willing to pay the engineering teams multiple thousands of dollars worth of engineering hours per pound saved...especially from the dynamic system. The 92 was seemingly perpetually overweight.
And its laughable to consider the gearboxes/oil filter arrangement of the 92 versus UH60 as being one-in-the-same. For one thing, the filter on the 60 is mounted vertically, not cantilevered off the side of the MGB casting shaking on giant moment arm with the 1P.
The relationship between 92 and S70/UH60 was only ever as close as whoever the potential customer wanted it to be.
US or foreign military? Its the same proven helicopter!
Commercial or VVIP? Its an thorough evolution into a new state of the art machine, not some old 1970s technology! (Its got AVC!)