Hypercoils 12" UHT Barrel 2-1/2" I.D. Coil-Over Spring - 275 lb. 57950BK Available in swivel and non-swivel

Available in swivel and non-swivel styles

this flat one-piece guide plate set is designed for Pontiac 350-455 and AMC 290-401 engines with 7/16" studs and 5/16" pushrods

Cutlass 1981-1980

Kit includes a steel retaining nut

No Special Tools Required For InstallationDaystar™ Products specializes in interior and exterior accessories for trucks

Hypercoils 12" UHT Barrel 2-1/2" I.D. Coil-Over Spring - 275 lb. 57950BK Available in swivel and non-swivelOptimum Body Diameter (OBD) Hypercoils feature a unique design concept that adjusts the body diameter of the spring relative to the end coils. The OBD design enables Hyperco to take full advantage of its ultra high tensile material by optimizing the applied stress through adjusting the spring's body diameter. The results are in and they are simply incredible: More Deflection Less Weight Increased Rate Linearity More Resistance to Bowing Fits All