MUSTANG GT 2005-2008 ROUSH PS STAGE 4 open filter inlet SOUND TUBE KIT 75% WHINE INCREASE SKU 226 GT Sealed sound tube with special

Sealed sound tube with special diaphragm cap installed on end of sound tube inside cabin

Foster SC Stage 4 Kit works on both closed air box and open filter or aftermarket CAI systems

Drilling through the firewall required

Drilling through the firewall required (bit provided)

Sealed sound tube with special diaphragm cap installed behind pedal

MUSTANG GT 2005-2008 ROUSH PS STAGE 4 open filter inlet SOUND TUBE KIT 75% WHINE INCREASE SKU 226 GT Sealed sound tube with specialIncreases the in cabin rotor sound by up to 75% Foster SC Stage 2 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 passenger side supercharger inlets setups.