Brother of Bud,
You won’t need the passport if you are running TaG. If you are running a rotax spec series you will need to have your engine sealed to pass tech. You could take your motor to one of the local builders and have it inspected and sealed if you choose to race a rotax only series.
This can be confusing, feel free to ask more questions. Take a trip out to Centennial to see the Rotax nationals this week. Those guys have seals on their motors.