I have a 2006 FX4 and have adjusted the torsion bars and put 33's on it. I am looking into lifting it and the only kit is by superlift. also i would need a driveshaft at some point it says. Is there any other modifications I would need to do? like Lengthening the brake lines on anything?

 

No, the kit comes with brackets to lower your brake lines for the front and rear.

 

The only other thing I can think of is that you'll want something different to lift the back... stacking blocks isn't the best way to go.