How are these headers, I ran a search on this but not to much info came up. only like one thread. I got some ctr cams and was wondering if it's ok to go with a 2.25 inch header or should I get the 2.5 inch jdm itr.

 

True 2.25 ID is fine for CTR cams, you may see a few more ponies with the 2.5" if your WHOLE exhaust if 2.5" depends on your budget and what your true need for power is.