At $3300 for the heads, cams, springs, etc., that's actually not that bad. I thought they were more like $4000-$4500 for everything included. Another question for you: it seems like your rotating assembly, oil system, valvetrain, etc. are all good to spin some decent rpm. Any reason your tuner stopped at 6000 rpm? As I mentioned earlier, looks to me like the power curve would have gone well past that.