Gaskets are available for both. The front one is very thin. If you clean the surfaces good & there is no high spots you can put the gasket over the studs & install the pumpkin. The rear one I glue the cover gasket with hardening gasket cement to the cover. You can use a thin layer of RTV on the other side or you can just put it on with RTV. This is a good time to replace the axle seals if they don,t look good.
George also