Don't simply replace the busted brake line...upgrade to a dual chamber master cylinder. In a single chamber system, when one brake line, brake hose or wheel cylinder fails, you lose all four brakes. If a rear wheel cylinder fails, you wash the inside of one brake drum with fluid, effectively losing one half of your emergency brakes.
With a dual chamber, you will lose front OR rear brakes in the event of a line failure, but not both.
Not to be morbid (or cliche) but next time you might not be so lucky. You could slide into on-coming traffic, slide through a stop light onto a busy highway (as I did in my '54 Buick a couple years ago...that's why I know about trying to stop with one brake after washing the other rear drum with fluid), or a kid running out into the road.
It's worth the money, and piece of mind.
Brad
