Guarrantied that they have a NSX specialist (most must be 50+) the other thing to decide is the timeframe. I normally avoid the 'busy' months. Usually, the best month for big repairs is January. They're all happy because they've got their christmas presents, customers are relaxing at home and haven't got any funds left for car repairs and the shop owner is struggling to pay his staff. They'll love you and run the extra mile to fulfill your wishes. The nature of the big project is that they earn less £ per hour than for the standard service work. That's why they don't want to see you rushing in during the busy months. Of course, they all claim to be busy but the reality is different. Lesson learned: never ever go there in spring.