Is a real testament to their construction that they can still be common over 35 years after they were originally bought. I can't see any of the new masports or victa let alone the cheapies lasting half that
They are made of thicker steel than later PT bases, so they don't rust through as easily or get fatigued at weaker points like around the handle mount holes. A full crank engine into the bargain and you have your explanation on their survival rate.
