Superlift springs for 69-72 trucks

[special-K]

I used their (Heckathorn's) hydraulic shocks,which is why they rode better. Gas shocks are for Baja racing where heated oil from constant long cycling causes aeration. They are ultra high pressure also,to prevent bottoming upon landing after being airborne. Stiff shocks make stiff springs stiffer. The spring needs to move first without resistance and the shock is to come along and limit rebound,no limit compression.