I bought a frame that did not have the rear spring hangers (in front of the rear axle) I bought a pair from a 72 pick up but they're too big and now I'm staring to second guess if this frame is a 69-72 k5 frame. Does anyone know if the spring hangers for the k5 and c10 s are the same? If not does anyone know where i can find a set for a K5?