These are the new "revised" Dynatech 1 7/8th long tube headers for LSx swapped Mustangs. These have exactly 1600 miles on them, never driven in the rain (spool and et streets), and no rust/dents/etc. Never bottomed out, not beat up in any way. These are in Arlington, TX. Prefer a local sale but if buyer is willing to pay actual shipping charges I will ship.