Youll be fine with only doing tibbys rear sway bar 18mm or 19mm. Elantras front sway bar are thick already, its 23mm & besides tibbys front sway bars are different. I recommend you do rear sway bar mod, buy bushings & brackets from energysuspension & buy front bushings 23mm from same website
KDM_STANCE_XD2
KDM_STANCE_XD2