It's amazing that we have any of these old trucks left to work on. If single line brakes failed as often as the gloom and doom purveyors say, they would have all been wrecked before they were 10 years old. Unless you're willing to install a complete dual line brake system, it's very likely you'll end up with something far more dangerous than an original system that has been brought back to "as new" condition.
I can understand the addition of seat belts- - - -even if you are a good driver, there are people like me on the road with you!
Jerry
