i just swapped a LS b18 into it. i didnt know if a stock integra exhaust or si coupe exhaust would bolt up to the car. i have it to the end of the downpipe but nothing else. i didnt know what would fit the car with that motor and bolt up the the original exhaust mounts.

 

b series header wont bolt onto d series cat converter..here is what u can do..u can get a LS cat converter which will bolt on to your stock eg pipe or bring it to a muffler shop and they will take care of u. pm me if u have any more questions..cause i have done this before.