These vehicles have solid axles front and rear with leaf springs. The front leafs are different on each side with the drivers side spring having slightly more arch. Our 4.5” and 7” front springs have degree shims attached to improve dive shaft angle. Drag link angle is critical. The stock Toyota drag link is a one-piece, non-adjustable unit that connects the pitman arm (at the steering sector) to the steering arm ( at the front axle knuckle). As the truck is lifted, the distance between these two points is increased creating two problems: 1) Since the stock drag link is now too short, right hand turning radius is decreased and the steering wheel is moved off-center. 2) The increase in drag link angle can cause a tendency for the truck to drift and wander, especially on well-worn or grooved driving surfaces. In extreme cases, it can even cause contact between the link’s lower end and the spring-to-axle Ubolt. The Superlift dropped drag link is also offered individually; refer to the Steering Correction section of the website. Take time to closely inspect all of you vehicle’s steering and brake systems for signs of wear and or fatigue.