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

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...

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

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)