Oops, because I appear to have used man maths to justify a bit of an upgrade to my trusty Z. I'm running the Stillen supercharger (the vortech v3) and a custom map around the 9lb pulley from Simon at Norris designs. Quite a journey to get to an amazing tune, as Stillen aren't the most helpful shop around. The end result though is amazing. Nice linear torque and power, tops out at 487.8 bhp. Damn! I'd recommend this setup, properly quick, easy to maintain and driveable power.
Interested in wheels and brakes next. Should probably come along to a meet up.