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Are these universal or would I need a specific one for a '91 Civic Si Hatch with a '96 Integra Type R swap?

My neighbor has this set up and she asked me if I could find her one.. I'm trying to get the lowdown to begin my search.

Anyone?

 
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They are going to be different for different cars due to pipe size, location and the location of the cat.

 
Rep Power: 387

So there would need to be some modifcation ?

 
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Depends on where the cat is. If it is the down pipe then need to replace that. Some cars have more than one cat for instance the WRX has 3. I mean you would need to find out where the cat is before you did any mods.

 
Rep Power: 387

Apparently, in this situation.. There is no cat, so how would that issue be addressed?
Would cutting the exhaust and welding one into it work?

 
Rep Power: 418

Okay, I think that there are cats made for specific applications and there are universal cats made for a certain pipe diameter. If it's a swap, then get a universal one 'cause a stock one might not fit. Either the stock one for the '91 Civic Si Hatch or a stock one for the '96 Integra Type R. So... Just look for a cat that will accomodate the pipe diameter of the exhaust system that's on that car now.

Try to cut the pipes below the heat shield. The cat will get hot and you don't want to feel this heat under your seat when inside the car. Also, try to get a cat whose length is no more than the length of the heat shield. Now, don't just cut and weld. You could do that, but it's kinda messy IMO. Cut and weld on flanges. Then bolt together. Use gaskets and good hardware too.

 
Rep Power: 387

Sounds like a major project. I'll let her know. No easier way?

 
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Is she using this car for street or track?

 
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She's using it as her daily driver (street), she's scared to take it to the track.