Hypercoils 8" OBD Coil-Over Spring - 1-7/8" I.D. - 250 lb. 33009P With 3 mounting tabs on

With 3 mounting tabs on the ring that have been moved farther inboard to provide a more solid mounting surface

12 AN Male

1971-1977 Chevrolet Vega

and all BorgWarner

Hypercoils 8" OBD Coil-Over Spring - 1-7/8" I.D. - 250 lb. 33009P With 3 mounting tabs onOptimum 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. HYPERCOILS because the most important race is the one you are in. Hyperco is a supplier of precision engineered, high performance suspension