Hello, with my Omega the head gasket is flat. Now I have an estimate from Opel and I am surprised what that costs! Did any of you ever let this be done ?? or does anyone know what work values are estimated for such a thing??? And whether the sealing set of 312,- € is complete, so for both sides ? And whether by Opel is prescribed to do both sides. And what kind of a role is the talk ? Should also cost 233,75. Would be nice if you can help me.