I'm comming over here from LS1Tech with my 2006 Grand Prix GXP. I've been lurking around here for a few weeks and am impressed with the site and members. It's nice having a GP dedicated site.
Some of you maye know me as DavidGXP.
Mods done to my car are
Engine/Trans: Milled heads, 10.25:1 CR, Back cut valves, slight port and polish, Viton PC seals, LS7 springs, Titanium retainers, High tech 7.4" Comp cams push rods, SLP 1.8 roller rockers. Ported intake manifold. Evans coolant, TransGo shift kit and dyno tuned before mods by Trifecta.
Exhuast: Catless 3" mandrel bent exhaust, into dual 2 1/2" Spintech XL mufflers, with dual SS polished tips. Suspension and tires: Strunt tower braces and 275/40/18 Hankook V12 tires.0-60mph in 5.0-5.1's