im sick of driving my car with it feeling like a 6 cylinder. it has awesome bottom end and mid-range torque and all the power seems to be mid-range.

im after some extractors (and cam shafts but thats a different story) that will give my gze more top end power.

do you know of anyone who makes them or have any idea on how i could get my own made that will give me more top end?

im aiming at the 5500-6500rpm mark for peak power

*edit*
i know gzes are great for low-mid range but i want my power curve to even out a little and not drop off after 5500rpm