I happen to get my hands on an old WRX turbo header and uppipe. So, I slapped them on the scale and WHOOPA! I got 45lbs for both. Then, I tool my CUSCO tubular equal length exhaust manifold/uppipe combo and CHACHING! I got 25lbs. Now, the US WRX GDA comes with a cat in the uppipe so I wouldn't be surprised if the US WRX header/uppipe combo weights 50lbs. So, save your $ for the headers, people. Not only they will give you great power gains, it will also cut down 20-25lbs of nose weght.
In the next installment, I will be talking about stock WRX downpipe/catback weight vs. BOZZ Speed titanuim downpipe/catback.