Strut Rods

The more you raise the front suspension in order to clear larger-than-stock wheels and tires, the less caster you will be able to adjust in. Then the steering becomes vague and twitchy and doesn't return to center correctly after turns. The adjustable strut rods will allow you to adjust in caster even though you've raised the suspension. They are recommended. Otherwise you'd have to spend a lot more money on a custom front end setup in order to get the caster you need with a raised front end.