Well packaged with oils to prevent any possible corrosion. Some WL models may need to clearance valves, depending on what size cams, lifters, and valves are used. We recommend doing the old clay check, as well as aluminum head type gaskets. The item "45 WL Flathead 61 High Compression Flat Cylinder Head Set Aluminum Harley WLA" is in sale since Monday, March 2, 2015.This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Cylinder Heads & Valve Covers". The seller is "americanclassicmotors" and is located in Zieglerville, Pennsylvania. This item can be shipped worldwide.