UPR's Triple Hook Quadrant and Double Lock Firewall Adjuster Kit is the ultimate package for your 79-04 Mustang. Includes our Triple Hook Quadrant that was recently redesigned with a new radius that decreases pedal effort by 20%. Also includes our best selling Double Lock Firewall Adjuster that is easy to set and lock into place. Firewall adjuster and quadrant are both CNC Machined 6061 Billet Aluminum and anodized giving you a precise fit and durable finish.