With the low rear end ratio, Specials have plenty of hill-climbing power. When \we lived in the Sierra Nevada foothills, our '38 Special was just the ticket, and very comfortable to drive. We bought it with radial tires equivalent to 7:00x16 bias plys, which lowered the engine speed a bit and provided great ride and handling. Special motors sound busy at 55 mph due to both the rear end ratio and the lack of insulation. If you plan to regularly go faster than that, you would do better to look for a car like Mark's with a different rear end at a sacrifice of power, or go for a Century. Roadmasters are nice cars, but they are BIG, and the '37 Roadmasters still had the '36-style body with lots of wood in the framing.