Which balancer?

Update:
So I pulled the trigger on the Chinese Fluidamper from eBay. It arrived today and although very poorly packaged for its weight, it seems to be without damage. I can’t tell if it is powder coated or painted. The numbers and lines feel like they were lasered on since I can catch my fingernail on the lines.
The pulley bolt holes are 5/16 fine thread and it weighs a portly 13.8 lbs according to my scale. It says Speedmaster on it.
Taking my rotating assembly to the machine shop later this week for balancing. I’ll report back with the machinists thoughts on fit and finish.

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