MUSTANG GT500 2007-2009 KENNE BELL STAGE 4 open filter inlet whine mod kit 75% WHINE INCREASE SKU 160 disclaimer Drilling through the firewall required

Drilling through the firewall required

Increases the in-cabin rotor sound by up to 50%

but also the leap into electronic typesetting

making it look like readable English

MUSTANG GT500 2007-2009 KENNE BELL STAGE 4 open filter inlet whine mod kit 75% WHINE INCREASE SKU 160 disclaimer Drilling through the firewall requiredIncreases the in cabin rotor sound by up to 75% Foster SC Stage 4 Kit works on both closed air box and open filter or aftermarket CAI systems. Drilling through the firewall required. Connects from inlet pipe through the OEM sound tube location. Sealed sound tube with special diaphragm cap installed on end of sound tube inside cabin. For drivers side supercharger inlets setups.