@69b3rt, those are the ones that we make in house. We provide the A, B and C studs and the E-Body studs which are a bit shorter. The correct nuts and seat spacers are available as well through us as well.
Plymouth Valiant & Barracuda Cuda (A Body) all models. Plymouth Cuda & Barracuda (E Body) all models. Reproduction of the original Factory Front Bucket or Bench Seat Rail Stud Mounting Bolts. Dodge Challenger (E Body) all models.