Alll 1999+ GM and all aftermarket LS1 cylinder heads use a center bolt valve cover design, leaving those with 1997 and 1998 LS1 (perimeter bolt) valve covers no choice but to switch if they want to install newer or aftermarket cylinder heads.  This kit contains everything you'll need to complete the swap, including:

• Both 1999+ GM Valve Covers with gaskets & bolts
• Both GM Coil Brackets

These are genuine GM parts, and are perfect for you 97-98 LS1 engine owners looking to upgrade.

1x 12582224, 1x 12570427, 2x 12563288