Thanks - I can find *that* part number quite easily, but that doesn't give any results when searching an OEM parts dealer like subarupartsdepot.com.
If I can order the part here in North America, it will be a much better option than getting it shipped from Japan, presuming this is the exact same part as the 2018/2020 tS (which I'm guessing it is, unlike the flexible draw stiffener).