Sarah, the RTCC car is the closest to a GTN and yes, I am sure MMC would fit a LeMans Blue hardtop to the car should you wish. The previous owner of that car (in fact the first owner) is a member of this forum, so should you wish background info, I'm sure he would be happy to assit.
As for the GTN hardtop, as far as I know, the GTN roof is removable (like the Lotus Exige people often believe the roof is fixed but it isn't).
The only thing you will not get on the S1 is the 4.6 Alpina engine - which is one amazing powerplant
However, you could compensate by tuning the 4.4 in the S1 and there are plenty of routes to take to achieve positive gains. Nevertheless, even in stock trim the S1 is no sloutch.
Black wheels - also do-able, although I don't think you'd want to paint the magnesium OZ wheels, on a stock S1, as they are so valuable now and hard to replace.
Anyway, it sounds like you've got a good idea of what you'd like and I'm sure you'll make the right choice. Don't forget that if you need help spending your money, we're here to help (and very good at it
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