This is a simple modification that will increase the lateral support in the stock seat backs. Also, it's completely reversible. Thanks to meldog21 for telling me about this mod. :thumb: By the way, I'm 6' - 180 lbs. If you are a heavy guy, you probably won't want to do this mod. Step 1...

out of curiosity..., which one in your opinion is better and why

- My 2009 Z06, 11k miles, HCI, AR long tubes, wildwood brakes, Mantic dual clutch, E85 Conversion, dual fuel pumps, and more

Hello all, LS7 Valve guide issue summary: • Affects a small, number of '08, 09 ’10 and ’11 Z06’s • GM discovered the condition through our cylinder head warranty data involving a very small percentage of our vehicles. • Through inspection of returned heads, it was determined that a machining...

Stock Z06 Wheel/tire sizes 2006+ Z06 Front: Wheel size: 18 x 9.5 Offset: +40mm Tire Size: 275/35/18 Back Spacing: 6.82” (173.35mm) Rear: Wheel size: 19 x 12 Offset: +59mm Tire Size: 325/30/19 Back Spacing: 8.82” (224.09mm)