Had both a N and an S. Both very driveable and reliable. Not nearly as driveable as a T, but on modern roads the lighter construction doesn't really have an issue. The transmissions do leak a bit in low, reverse and idle, but seal up in high. Th N had the exhaust pressure powered oiler, and the S had the mechanical oiler; both performed admirably. I always found the water pump gear to be a bit noisy, but a minor issue. Both had the original carburetor and coils and performed well. As another stated, they like to cruise at about 30 mph. Being light they do pretty well in most hills too. Fun cars, sometimes I wish I had one or both back!