Thinking the problem may not be header availability but shipping to Netherlands being more than header is worth. I have an old OBX that was on car for a decade and is discolored but not crazy rusty or cracked but have no idea what kind of mad money anybody would charge to ship. That being said, I do have a well used 4-2-1 header and a box. Question is how bad do you want to mess with it vs. just getting one of ebay?.......................
This is old pic of it on car. I have a coated one now. It is same condition as in pic..................