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.
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...