ST Suspension Muscle Car Springs for 79-93 Ford Mustang (/ Capri thru '89)(68520) 1401 The Serrated/Helix combination design also

The Serrated/Helix combination design also reduces intake whistle that occurs with Helix only designs (US PAT 07055513)

The Snow Performance Stage 4 Boost Cooler Platinum Water Injection Kit is engineered for superior cooling performance in high-boost applications

completely replaces o2 housing and downpipe

these ducts offer durable performance-oriented styling suitable for street and track use

Options: High Flow Cat

ST Suspension Muscle Car Springs for 79-93 Ford Mustang (/ Capri thru '89)(68520) 1401 The Serrated/Helix combination design alsoThis is a set of coil springs designed for achieve handling improvements in cornering, grip, and turn in response. Stiffer yet progressive spring rate provides a civilized ride over uneven pavement. Sport Tech springs are designed for a long life of precision operation, and are built to avoid the disappointments of spring sag and corrosion that plague inferior brands. A multi level tempering process begins with an annealing stage which heats the