[RedAlertV]

One more reason to upgrade to DC =)

 

[RedAlertV]

The catalytic converter would be the most expensive thing out of the whole system Anna, the rest is just piping so it's cheap. As 08versailles mentioned I would go with a second opinion. Below is a website where you can get the converter.

RockAuto Parts Catalog

 

[RedAlertV]

Thank you 08versailles and RedAlertV for your suggestions. I took it to another mechanic (brakes and muffler chain) and it turns out that catalytic convertor can still work but pipes and muffler is rusted. But still they gave me a quote for 800 and when I asked how much it would cost me for whole part to be replaced, they told me around 1700. I will probably take it to another mechanic. I also took a look at it; most of the part look rusted. Only good thing is the catalytic converter might not need replacement.

That still seems overly expensive if they are only replacing everything from the catalytic converter back. Might as well buy an aftermarket exhaust system then, they run for 400 online. I'm sure you probably don't want to go aftermarket but I was just using it as an example. Either way best of luck and don't give up on finding something cheaper.