I'm wondering about the provenance of the original aluminimum forgings.
I don't have experience of the UK metal-bashing industry to know if there are
UK forges for aluminimum hubs.
Would the machining not count as a “substantial transformation”? I think it would, whereas knocking bearings and seals into machined hub bodies would not.
https://www.superstarcomponents.com/en/v3-front-hub-32-hole.htm