Dynatech Dynatech 750-91110 - Header BBC 79-04 Mustang Dynatech - 750-91110Headers - Swap Long Tube - 2.125 in Primary - 3.5 in Collector - Stainless - Black - Big Block Chevy - Ford Mustang 1979-2004 - Pair MSRP: $824.99 Was: Now: $749.99 Add to Cart