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QA1 MOD Series Front Coilover Kit - Double Adjustable, Large Tapered Flat Spring, 300 lbs/in Rate - 1977-1979 Pontiac Phoenix Spartan Motors 2004 Porsche 911 Turbo Cabriodon't be limited to adjustments! Completely re valve in minutes with the MOD Series Shock. Designed specifically on your 1977 1979 Pontiac Phoenix to meet the demands required by today's high performance drag race and handling pro touring cars, QA1's multi patent pending MOD Series shock will transform the way racers respond to changing track conditions and configurations. The key element to this tunability is QuickTune Technology: dry modular valve