a 2in drop will definitely throw the suspensions geometry off. Instead of your a arms being in align or level to the ground, now they could be angled up, could be causing a toe in on your alignment. and liked asked, did you get an alignment after your spring install? if not, i would get one. CC plates can help adjust the caster and camber and help, sometimes back to perfect or sometimes close. For mine i had to get CC plates, Steeda balljoints, offcentered rack bushings, lowered endlinks. Also remember a fater than stock sway bar will rub alittle on your tires when the wheel is turned all the way and then you drive, cure for that is not to turn it all the way when you drive.