Used 243 ls1 Patriot cylinder heads aftermarket springs and titanium retainers good for. Only a few thousand miles since rebuild and have since been fully checked out surface is flat, pressure tested good and valves vacuum tested. No broken bolts or stripped threads. They have been hot tanked and are ready to install. The item "Patriot CNC stage 2 ported 243/799 LS LS1 LS LS6 CYLINDER HEADS 4.8 5.3 5.7 6.0" is in sale since Saturday, January 30, 2021. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Cylinder Heads & Parts". The seller is "fuelish351" and is located in San Jose, California. This item…