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Ships within 48 hours · Estimated delivery Jul 27 - Aug 1
Headers are the instrument
They are slightly louder than OEM with the valves closed and significantly louder with the valves open
Equal Length 8-4-1 Headers (now with double slip joints $$$)
But it wasn’t the goal
*Pre-Order Round 2* Mustang S550 / S650 / GT350 / GT500 Headers are the instrumentThis is strictly to save your spot for PRE ORDER #2 Full amount will go to your order. This is FULLY REFUNDABLE at anytime. We had originally planned to deliver in February, but we decided to make several improvements listed below. This is easily the most intricate production header system ever offered. Pre order #1 Completed Fulfilled April May 2026 Pre order #2 fulfillment target is Oct Sept 1) The flat 4 1 collector, while cool and different it is