Yep! There are even tools (mentioned in the OpenCore install guide) that automate finding serial numbers and board IDs and all of the other parameters required

Yep! There are even tools (mentioned in the OpenCore install guide) that automate finding serial numbers and board IDs and all of the other parameters required for that functionality to work. Even though I couldn't get my graphics card working at first boot on my computer, it still logged me into iMessage automatically.