THESE HEADS ARE ALL DONE UP BY ed pink racing engines COMES AS YOU SEE IN THE PICS they were marked but its hard to read the etching in the head now but they are all reworked by ED PINK RACING ENGINES. The item "ED PINK RACING 427 Aluminum L88 ZL1 3946074 Bare Cylinder heads rectangle port" is in sale since Saturday, June 1, 2019. This item is in the category "eBay Motors\Parts & Accessories\Vintage Car & Truck Parts\Engines & Components\Cylinder Heads & Parts". The seller is "partsbandit" and is located in Whittier, California. This item can be shipped worldwide. Modified Item: No Manufacturer Part Number: 3946074 Brand: GM