[RallySnake]

Dugly,

Do not wait, buy that proportioning valve as Mickmate suggested and install it in your rear line quickly. Take it from me, going off the road sideways at high speed is not much fun.

You will need a tubing cutter and flaring tool to do the install. It must be a double flare. If you don't have the tools, a good shop can probably do this for you in an hour.

A better alternative might be to buy an exact replacement master cylinder of the original with stepped bores. You could have your old one rebuilt. A lot of engineering went into that design to get proper brake balance.

Test your car by braking hard in a large parking lot (see my original post). This is important. I lived in Houston many years and the traffic there is very frustrating and requires excellent brakes.

RS