I did my rear end, no G80 though. I bought a new gasket from group1autoparts.com However, as mentioned earlier, I realized I could have reused the casket. It's not the paper/cork jobs of previous years, its a reinforced rubber unit. Pretty beefy if you're careful. Careful reading of the service instructions indicate that the unit can be refilled to the bottom of the fill hole. As always, be sure to remove the fill plug before taking the cover off so you ensure the ability to refill the unit after draining it out.