i ordered the dc ss catback system for my 92 lude si and its coming next monday, my question is, what if the cat is welded onto my stock exhaust? cuz when i bought the car from previous owner i made him do a smog check and he failed and he bought a new cat but i vaguely remember him saying something about welded on, so what if its welded on? how do i check if it is? and will i need to cut it off or buy a new one?