Pretty simple, but kinda hard to explain without actually showing you. Hope I don't get you all confused. On each side, you have a tie rod with 2 rod ends. On each tie rod, one end is right hand threaded, and the other is left hand threaded. Loosen the jamb nuts beside the rod ends. Make sure the handlebars are completely straight. Then just turn the tie rod which ever way it needs to go. Shortening it will make the tires toe out, and vice versa. I just use a tape measure to get them aligned. Measure between the two front tires, in the front and back, from the widest part of the tires. You have to measure right in the middle of the tire, height wise. They should be the same measurements when they are straight. Just make sure you keep checking the handlebars for straightness. They will turn on their own while doing this. Then, just tighten the jamb nuts back up.
As far as the spacers, I would imagine that they use the stock studs and lug nuts. I really couldn't tell ya.