So my 00 got totaled, i bought a 96 and found the exhaust manifold is cracked and i need to smog soon. im not ready to make a decision on my exhaust setup and i just want to get smog out of the way. i have DC 4-1 header from my 00 and im wondering if i can just switch it out with the stock without having to fix the flange

 

since i'm psychic, i will say yes.

But for those that want to try to answer your question, is it a gsr or ls?

if the 96 is a ls/rs/gs/se, yes it will fit.
if the 96 is a gsr, no, your 00 XX it won't fit the stock 96 GSR exhaust system. It will bolt on, but there a lenght differences.

 

it is a gsr

would it be as simple as rewelding the flange to fit?

should i just get a whole new exhaust? haha

 

its not that the flange is different; i think it's actually the same. the 94-99 gsr header is shorter (with a longer exaust) than the rest of the 94-01 integras.