Fenderwell headers too Close to Master Cylinder Line

There may be more clearance than the angle of the pictures reveal. What would worry me is a longer drive where your not applying the brakes much. The fluid won't be cycling back and forth in the line and the headers are good and hot for an extended time. We're probably talking only a few cc's of fluid in that area. Boil the fluid out or burn it and plug the line it still equals brake failure, usually when you need them the most. You have a beautiful car by the way and obviously take great pride in it. Not trying to knock you, just something to consider.