I have an 05 FX4 Supercab and I just bought the daystar leveling kit. I have read a lot of posts of the a arms rubbing the coils after install. I am planning to put 35x1250x18 Nitto Mud Grapplers. My question is If I install it and crank the torsion bars will the a arm still rub, and more importantly does this truck even have torsion bars.

 

I've never heard of a problem with the coils and a-arms rubbing with the Daystar kit. I've heard of that problem with some of the first 2.5 inch Autospring leveling kits that apparantly gave near 3 inches of lift. Also, your truck does not have torsion bars.