Came across this link for anyone who is still interested:
https://forzaaa.com/products/replacement-long-range-fuel-tank-system-135l-35l-extra-9-gal-extended-range-for-toyota-sequoia-5-7l-gasoline-2008-2022?utm_source=chatgpt.com
Out of China, so just shipping is probably pretty costly. But an...