Yes they have the orrect part numbers cast into them, yes they have the penta star cast into them, upside down as orignals, yes they have a date code cast into them. Unless your restoring a $100,000.00 matching number A12 car then who really care's if there orignal? Do you really think they hurt the value of a $30,000.00 Road Runner. Let's get real. There cheaper then redoing a set of rusted 40 year old manifolds. They come complete with stud kit and proper sleeve nuts even give you the gaskets from felpro. And good luck finding a set of old manifolds with the heat riser still on there never mind working.