modify one of these?
https://www.doddingtonhallonline.uk/components/finishing-kit/giant-2021-tcr-cone-spacer-od2__4039?currency=GBP&chosenAttribute=380000040&gclid=Cj0KCQiAwbitBhDIARIsABfFYIIaVwzfh_G9toh1TbmpRqUkhuDSZTMHy5dAEHDBomVP6LhT77jNx4AaAgVAEALw_wcB
That could work but I don't think the underside is going to have the right channel to compress the rubber compression ring, so there would be some play in the headset.
@roadwarrior started
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modify one of these?
https://www.doddingtonhallonline.uk/components/finishing-kit/giant-2021-tcr-cone-spacer-od2__4039?currency=GBP&chosenAttribute=380000040&gclid=Cj0KCQiAwbitBhDIARIsABfFYIIaVwzfh_G9toh1TbmpRqUkhuDSZTMHy5dAEHDBomVP6LhT77jNx4AaAgVAEALw_wcB