Anyone have a guess about how fast the old B18 is turning at 70 miles an hour? This is stock car that I am thinking about buying and does not have overdrive. I will not use it as a daily driver but where I live I would need to take it out on the highway to get into civilization. I drove it and it has a surprising amount of power for a dual carb 1800cc engine (my first experience driving a vintage Volvo), but sounds like it is wound out over 60 mph.