02 Suburban Brake Lines at Master Cylinder

02 Suburban Brake Lines at Master Cylinder Had the rusty brake lines common to these Chevys. Forced to replace them, but lost my markings for reattaching front and rear main lines to Master Cylinder. Is the front line attached to the radiator side on M.C. and the rear line to the firewall side of M.C.? I know I have to get them right, I know the fronts should be the larger half but they both (sides of M.C.) appear the same size.