I'm getting new head gaskets and valve job done. Now would be a good time to dress up the motor with some nice valve cover. Most of the new ones I see for sale just have the small holes for pvc and breather. I need one side to have a oil filler hole and pvc hole and the other side for a breather. I don't know if chrome really holds up with the heat. I'm leaning toward polished aluminum. I also want them to have Chevrolet on them. Any suggestions.