I have never seen a tapered upper ball joint adapter like that.... Seems rather convoluted.
It looks like the kit includes a special tapered to straight shank adapter that screws onto the threads of the ball joint (in lieu of the normal washer, nut, and cotter pin) and is then pinched inside the pinch joint of the blaster spindle.
I don't recognise those ball joints really. They look like the Moog chassis tie rod end with the M14 shank to be honest....
Either way, you're missing a shank adapter piece that would need to screw onto the ball joint in order to fit inside the "pinch bolt" upper ball joint mount.