When looking for quality, performance and value in a bolt-on 5.0 liter Mustang GT 5.0 header kit - no other brand can compare to BBK quality, performance and value. ALL BBK Shorty Mustang Exhaust headers are manufactured with 1 5/8" CNC mandrel bent tubing for unrestrictive airflow and a one piece laser cut flange for added strength and durability. ALL BBK Headers are Pressure tested to ensure leak free performance. Each BBK Mustang tuned length shorty exhaust header for the 1986-1993 5.0L Ford Mustang has been designed and dyno tested at the BBK headquarters in Southern California to Maximize performance. BBK's Mustang headers offer distinctive quality that guarantees many years of top performance. These BBK CNC Series headers for the Ford Mustang 5.0 GT are also available with BBK's optional high-temp show quality Silver polished ceramic coating or chrome finish.