What does a set of CES headers cost roughly? The stock header is an abomination. You could put the same thing together with hardware store black pipe, so any header that matches the back pressure to each cylinder (length dependent) and increases the flow rate through the exhaust (cross section dependent) would be a huge improvement. Granted, it's extremely difficult to just fabricate a well balanced exhaust by eye, which is why CES is so effective. Someone over there did their homework. Keep us all posted on what you decide to do... I'd love to swap my stock header out, too.