I wanted to try the big tube replica header... and I don't think it's works well with my setup. I'm not happy with it. I made same power with my ITR header and little more torque too and on my dyno chart my powerband dips around 6200 then comes back up around 7000, my motor never did that so I will retune to fix that. 205 whp 133tq.
Head:
Supertech valvetrain
Skunk2 Tuner 2 cams
