I'm probably going to buy a ITR Apex N1 exhaust from a fellow member on H-T, but I was wondering about a few things. Will just the axle back portion of his N1 fit on my piping which is for a Apex Dunk, but obviously for a GS-R? If not, considering that I do have a JDM Header, I need to replace the Carsound cat (due to rattling), but if I was to replace it could I just order a different cat size and bolt up the entire ITR system? Sorry if this is confusing........

 

If you are getting a cat, just get the cat for an ls/itr and it will bolt up.

 

Steve is correct, You just need a 17.75" cat (94-01 LS, GS, RS, 97-01 ITR, and 00-01 GSR)

 

so 00 to 01 GSR and 97 to 01 ITR exhaust=completely bolt on interchangeable?

 

Stephen and Mike....Thanks! That's what I was thinking, but I just wanted to make sure. Also, do either of you know if the B-Pipe on Dunks and N1's are the same? Basically, if I bought a N1 Axleback, would it bolt up correctly to my original Apex Dunk Piping? Lastly, I'm assuming the exhaust hangers are the same? Thanks again!