Registration number

1.Can I register a 22-year-old car with a 07 registration number? 2.Is the registration number taken away from me again next year by increasing the age limit of joungtimers from 20 to 30 years? I hope it is possible to continue using the 07 registration number even longer because the taxes due to the 3 liters engine without KAT are very expensive. 3. What do I need for papers if I want to register the car with the 07 oldtimer registration number? 4. Is a vehicle sufficient for me? t 20 years or older, or do I need another?