Quality gasket kit. AWAY. The nut is down, you need a long extension and a swivel that interferes with the vacuum valve at the back. Disconnect the hose and the valve can also be pulled straight up and back. Make sure you have your cutting tools to insert the plastic holders that hold the wire in the fender. It's going to be very tight in the back, so make sure the padding stays in place to ward it off. I put a few small drops of silicone on the valve cover down to the gasket just behind it. All this has nothing to do with the quality of the seals. The driver's side is better, but removing the two screws on the coolant reservoir and moving it to the side helps.