I was looking on a web site, and I saw an exaust system for the CRX. It was sold only in Japan and I was wondering if it would fit, still be street legal and pass emission test if it would be installed on a CRX in the United States?

As long as it goes back to the cat, you'll be fine for emissions. However, noise can make it illegal for street use. Other than that, you'll be fine. And as far as I know, JDM crx and USDM crx has the same exhaust from the cat(although from the headers it is different)

Yea i believe everything should work just fine as for bolting together. I really wouldnt even worry about the noise factor. Here In Colorado, there are so many loud cars that there exhausts hit over 140 db that its not even funny. So dont worry about that too much unless ur state is REAL strick. But i say :finger: em all