ok so here's the deal. i just bought a direct bolt on catalytic converter and a new downstream o2 sensor.. but the last bolts taking off the old catalytic converter is wierd.. i think the nut and the bolt is welded in together?? ive been trying all morning trying to loosen the nut but it wont budge even when i drowned that bitch in wd40 about 10 times.. idk if this makes any sense so heres pics..













i think they are both welded in im not sure??? but maybe the nut is super rusted..