doesnt matter about the size of the engine at all, its just a fun day and not a race, i took my qv round last year, went on my own then with chris the instructor, what a difference, he shows you how to corner and how to get the best out of your car, amazing difference..
i suppose the age limit is over 18 but will check for you
you can bring as many guests as you want but it will only be you driving, bring a helmet too or you can hire one for about £20, and if you take a friend round they have to wear one too
you dont have to have insurance its entirely up to you, when you think that there are some £60,000+ cars going round the track i dont think anyone will be going mad, and if they do the marshalls are excellent and will get them off the track
the guys are really friendly and will take you round in their cars if you ask, enzo brought his ferarri last time and took my daughter round a few laps, dunno if he is bringing that again or his maser, both beautiful cars...
i will get andy to post some answers for you too, cos im hopeless and miss things out
look forward to seeing you, perhaps if you come you can meet up with Lisnik aka Nick and convoy over as he knows thw way, i will get him to message you