Iv searched. After I pass emissions, I have an rsr header 4-2-1 that I plan on putting on. I also purchased a test pipe, but have been thinking about leaving my stock cat on there. Will my rsr header bolt up to my stock cat?

 

yea it will bolt up rite up or should..did u make sure that u order the rite header for ur car.

 

only if the collector isn't 2.5''

 

i baught the header for 80 bucks. Its an authentic rsr and came off a jdm b16. I have a b16 head on my car. The number ont he header is e3-3003 or something like that so hopefully it is right