My alignment rack: -To get front wheels aligned parallel.
1) Measured distance on rear tires from outside right tire and outside left tire - 48in. (My measurement, yours may vary)
2) Draw two parallel lines (PL) at 48in on floor.
3) Position cart on two lines - Using a 4ft. 2x6 (MB) held against rear tires, positioned cart where board is parallel to lines on floor.
4) Center steering wheel.
4) Place (MB) against front wheels, draw line on floor, compare to (PL) to current wheel alignment. Lines drawn on floor provide excellent visual.
6) Measure distance from ball joint to frame point wheel with wheel out of parallel.
7) Turned wheel to parallel with (PL) floor line and remeasured same points, the difference in two measurements is what's needed to correct excessive tow-in.
Repeat process for other side.
9) Adjust tie rods measured distance difference, verify wheels are parallel to lines on floor.
Wheels are now parallel, cart tracks quite nicely, debating if I should finish moving wheels to 1/4 inch tow-in on each wheel per factory spec. With 4 inch lift and oversize wheels, not sure if specs still apply. I'll watch for tire wear.