The bump steer spacers included with either my Suspension Geometry Kit or Front / Rear Knuckles should be close enough for most users, but if you wish to fine tune a little you will need some additional spacers. This kit includes 2 each of .030", .060", .100", and .200" aluminum bump steer spacers. You will need to remove the spring, and jack the suspension through it's range of motion using a bump steer gauge to properly adjust bump steer.