Raybestos Ball Joints for most D44IFS TTBs; Ford/MotorCraft are better, and not substantially more expensive.
Upper:
MotorCraft MCS-10339Lower:
MotorCraft MCS-10253The procedure to install the steering knuckle is:
1) Assemble knuckle to axle arm assembly. Install camber adjuster on the stud of the front suspension upper ball joint with the arrow pointing outboard for "positive" camber, pointed inboard for "negative" camber.
2) Install new nut on bottom socket finger-tight. Install and tighten nut on top socket finger-tight. Tighten bottom nut to 47 N-m (35 ft-lb).
3) Tighten top nut to 136 N-m (100 ft-lb), then advance nut until castellation aligns with cotter pin hole. Install cotter pin. NOTE: Do not loosen top nut to install cotter pin.
4) Retighten bottom nut to 150 N-m (111 ft-lb).