73-76 factory disc brake calipers

Makes no difference. For all practical purposes you are building a 73 to 76 Dart now. Trust me on the brake lines. My photo is mock up. Top of brake line is just resting on upper ball joint so it does not flop around.View attachment 1715087499
Do the Camaro brake lines you mentioned fit better than 73-76 a body brake lines? Don't understand why not to use proper 73-76 a body lines with the same year k frame, spindles, calipers, upper and lower control arms, sway bar, and calipers located in factory position.