My 347 developed some popping, running terrible. After checking some things my #7 plug was black. Checked for compression and had none!!!!! So I pulled the head tonight and the head gasket blew from the #7 to #8 Cyl. So edelbrock suggests the Fel-Pro 1011-2 for mild performance engines. So my question is, is there a better gasket besides going to a lock wire head gasket?