Are you just trying to reverse the ball joints? No, no, no. You don't just "turn the ball joints around". They must stay on their respective sides, keeping their original orientation.
Remove the ball joints. Keep the driver's side bj on the left, and the passenger's bj on the right.
Now take just the spindles, caliper brackets and calipers and take them over to the opposite side of the car, so now your calipers are facing the rear. Now bolt the driver's side ball joint to what was formerly the passenger side spindle, which is now on the driver's side. Follow suit with the passenger side. All done.