Rp17..If your talking about the clamps that connect the muffler to the u-pipes. These clamps are similar to the OEM clamps but they offer a stainless steel (last longer) version. The stock clamps are aluminized steel. Along with a little muffler cement, it might cure the leak.
AccuSeal Exhaust Clamps: Torca AccuSeal Clamps in Stainless Steel or Aluminized Steel for Lap Joint Connections