exhaust problem

[jpm1105]

i just got a s13 but the exhaust was some cheap one not even stock it didnt pass smog before so the previous owner welded in a cat but i wanna get a new catback exhaust but theres nothing i can bolt on the new exhaust i want cuz of the welding. Help please!

[w0nderbr3ad]

You're going to have to replace the whole thing, unless you have someone cut the cat out and weld on flanges onto it. I just ended up replacing the header, catalytic converter, and exhaust because they were all one piece.