Ok, having recently relocated my master cylinder under the floor I am re-plumbing the brake system. Just want to make sure I have it the best way possible. What master cylinder port do you use for the front/rear brakes? I know there is some proportioning built into the master cylinder, but I am talking big rear tire drag only use. I will be plumbing in an adjustable valve as well, so where should it go.....front brake line or rear brake line? Oh, BTW I am using a single chrysler type master cylinder with 4 wheel disc brakes.