Unfortunately I could not get Suica to work on my Pixel 7a, while a fellow traveller with an iPhone had no issue. So AFAICT for Pixels you sadly still need a Japanese device to use Suica in Google Wallet.
The Pixel 6 and Pixel 7 apparently does have the hardware/software needed for Suica, even on non-Japanese editions of the phone.
However, it's blocked by Google in software depending on the device SKU (maybe because Google doesn't want to pay licensing costs?). If you have a rooted Android phone, you could bypass this check, see https://github.com/kormax/osaifu-keitai-google-pixel.
Hopefully it means that a future version of the Pixel will officially support it world-wide, but who knows. Japan has one of the highest rates of iPhone usage in the world, so there's not much incentive to support Android users.
Unfortunately I could not get Suica to work on my Pixel 7a, while a fellow traveller with an iPhone had no issue. So AFAICT for Pixels you sadly still need a Japanese device to use Suica in Google Wallet.