TVR Tuscan S - Im pretty sure it aint turbo'd, didn't feel like it when i was in it, absolutly amazing car, the noise and the power were amazing, was weird having every single person look at you as you drive along
I was only the passanger though thankfully, didnt have the bottle to ask for a go!!
Either that or an Elise, been in one of them and for a N/A motor its rapid, handling is stunning, really fun car
Cant really comment on to many other N/A supercars without going in em tho, M5 would be a nice choice though