Headers are good!
Don't forget to take a die grinder & dremel to them.
They are far from optimized the way they come...
Lots of welding flash and sharp edged inner lips sticking into the air flow. Not to mention the ports are smaller then the head outlets due to the thick wall tubing used. Just grind that away too. Afterall it's welded on the backside of the flange AFTER the ports.
Not that I've had any recent experience doing this mind you... :rolleyes:
