Headers are an excellent addition to any mustang. We stock a wide variety of tune friendly headers. We call them tune friendly because there are a lot of long tube headers on the market that re-locate the 02 sensor to an undesirable location (not tune friendly). This can cause check engine lights that can at times be difficult to eliminate even with a custom tune. The headers that we install and stock are headers that we feel fit well and require little to no tune adjustments for 02 sensor locations. All of the shorty headers are direct bolt in with zero computer programming needed.