As I understand it, not on the club stand with your NSX parked up there, the entry for those tickets closed a while back. The space allocated to each club is on the basis of those tickets.
Tickets as a member of the public are still available. I’m not sure whether you can just turn up on the day or have to book in advance, the Silverstone site will say. With general admission tickets you will park outside the circuit irrespective of the car you arrive in. Obviously once in the circuit you can visit any of the club stands, race car paddocks or public grandstands.