5 You can purchase rolls of brake line and fabricate your own. Or you can order them pre-bent for your application from Classic Tube. For example, if you’re converting a ’65-’66 Mustang to dual braking with power-assisted front disc brakes, Classic Tube has galvanized or stainless steel lines ready for installation with the correct fittings in kit form. Stainless steel lines are more difficult to work with because they are not as flexible. Classic Tube also offers pre-bent lines.