i front stretched the front 4.5". your biggest hurdle wont be the steering itself. what happens is the axle will no longer be located under the raised hump in the frame. this will create problems with high steer arms and moutning TREs. i didnt want to simply notch the frame so i cut an inch out of the height and grafted the bottom back on. i then had to make brackets that bolt under the high steer arms and tie into the factory TRE mounting on the knuckle. this let me lower the moutning points. I then used a PSC prepped Jk box as far forward as possible. i didnt like the astro box because the box itself hangs too low and would interfere with the draglink and tierod as well. of course had to make my own pitman arm, one thats bent up and over the links and just swings under the frame rail. if you plan to lift it high then you will have less problems.
-insert meaningless out-of-place political diatribe-