THIS SPECIALLY BUILT SPUD SHAFT MOUNTS TO GM SAGINAW STEERING BOXES WITH 36-SPLINE INPUT SHAFTS. THIS 6″ SPLINED SHAFT WILL GO THROUGH THE FRAME WHEN MOUNTED AND PROVIDE ADDITIONAL CLEARANCE AT THE RADIATOR AND MOTOR MOUNT ON THE DRIVER SIDE FRAME RAIL. THE OPPOSITE END MOUNTS DIRECTLY TO BTB’S COLLAPSIBLE TELESCOPING SHAFT ASSEMBLY WITH A 1″DD END (BTB#40-4123).