You will be able to gain the rating (provided that you have at least 40 hours flight time since licence issue) by completing a 5 hour course at an approved training organisation.
Can we expect 'Grandfather rights' or do I have to do the 5 hour course with a young inexperienced hour building Instructor teaching me what I already know after 20 years of both competition and display aerobatic experience?
Cynical? Moi?