Tobee® provides 19116-XX-30 impellers for Mission centrifugal pump 8 x 6:

19116-54-30  Impeller  8 x 6 – 9.5″
19116-50-30  Impeller  8 x 6 – 9″
19116-A0-30  Impeller  8 x 6 – 14″
19116-94-30  Impeller  8 x 6 – 13.5″
19116-90-30  Impeller  8 x 6 – 13″
19116-84-30  Impeller  8 x 6 – 12.5″
19116-80-30  Impeller  8 x 6 – 12″
19116-74-30  Impeller  8 x 6 – 11.5″
19116-70-30  Impeller  8 x 6 – 11″
19116-64-30  Impeller  8 x 6 – 10.5″

The Magnum has an open impeller design that contains wide-tipped vanes and a more tangential circumference of the suction allowing the pump to create a smoother flow pattern when handling abrasive fluids. The Magnum is available in Magnachrome™, hard iron, stainless steel, and aluminum bronze fluid ends. The pumps can be unitized with electric motors, diesel engines, and hydraulic motors (horizontal, vertical, or close-coupled configuration).
Also available, Horizontal and Vertical Close Coupled Magnum.