Hello,

I have 2 piece brake line to the rear and I would like to replace my booster , master and proportioning valve in one shot ( for looks ) My question - is there any difference between the valve under the booster with cars that have 1 or 2 piece lines to the rear ( other valve under drivers seat )

If you talking 4 wheel disk then valve just needs to be somewhere along the line to the rear, does not matter where.

no What I mean is th valve under the master are they all the same for cars with one OR 2 piece lines to the rear. The car is disc/drum

Yes, I believe they are the same valve. You're talking about the valve with the big hex nut, right?

I don't know if they are the same value or not. I just purchased a new one and I had to specify if car was all drum, disc/drum or all disc.