428 CJ Valve Cover Gasket

What are the best valve cover gaskets? Can’t seem to get the left side to stop leaking so going to replace the gaskets and want to purchase the best there is.

Felpro cork is part number VS13049C
Felpro rubber is part number VS13049R

Use a gasket sealer for the gasket to the valve cover and nothing on the other side just carefully tightened.

Thanks for the advice!

Might want to reduce oil flow to top end . Stock dia is 5/16 under the rocker stand . Street fe can go to .100 dia and race to .060.
Just take a piece of 5/16 stock and drill your hole. Drop in the hole under the rocker stand and reassemble.