One thing left to do is a quick 'driveway alignment' so you can get the truck down to the alignment shop in one piece. With aftermarket spindles, the toe adjustment is usually thrown way off so some tweaking is necessary. FYI 'toe' is which way the wheels are pointing. Caster, the position of the wheels in the wheel well, and camber, the tilt of the wheel laterally, are effected by the drop as well, but toe is the only one thatll really stop you from driving the vehicle safely. The other two are to improve contact patch and tire wear.
Ok so to adjust it, you need to set the steering wheel straight, and lock it in place. Now loosen the 13mm tie rod adjusting sleeve bolts. This will take pressure off the tie rod threads and allow you to adjust the toe by turning the sleeve either in or out. Theres a special tool to turn the sleeve with ease, but you can use a flat head screwdriver in the slot or a pair of pliers.
Watch the tire as you turn the sleeve. Look right down the sidewall of the tire towards the rear and turn the sleeve until you see the sidewall of the rear tire lining up with the sidewall of the front tire youre looking past. Its kinda difficult to explain but its easy to do. You dont need to get it perfect, just better than what it was. You want it to point straight as possible.
Ok once you have one tire set, take a tape measure and measure from the tread of one tire to the tread of the opposite tire in the same spot (refer to picture). Get a measurement for the front and back of the two front tires, as close up to the middle as you can. You cant get right to the middle because of the exhaust and crossmember behind the tire, and make sure you take the two front and back measurements at the same height. About where I have it int he picture is about as high as you can go.
You will see they are different because the one tire you havnt adjusted yet is pointing the wrong way. Adjust the tie rod sleeve in or out until you can get the front and back measurements the same. Once theyre close, tighten up the 13mm bolts on the adjusting sleeves and set the truck back on the ground.