EJ20R 2.5" OEM Catless Header... On a FRZ?
 

So I used this header a few years ago on my 2.5L N/A Impreza. It was designed for the EJ20R Legacy in Japan which was an almost 200hp EJ motor with DOHC and dual variable timing.

I tested out this header because it had a 2.5" flange and looks basically stock and wasn't really too expensive.

Part Number - 44105AG040 Currently $476 on Amayama.com if anyone is interested in trying it on the twins. I'm not sure if it will fit under the car, but it was designed to be somewhat compact as I had to use a turbo oil pan to clear it...

Here are some pics:

http://i15.photobucket.com/albums/a3...amojen/935.jpg
http://i15.photobucket.com/albums/a3...amojen/944.jpg
http://i15.photobucket.com/albums/a3...amojen/943.jpg
http://i15.photobucket.com/albums/a3...en/header2.jpg
http://i15.photobucket.com/albums/a3...en/header1.jpg
http://i15.photobucket.com/albums/a3...en/newcat2.jpg
http://i15.photobucket.com/albums/a3...derandcat1.jpg
http://i15.photobucket.com/albums/a3...derandcat2.jpg