It don't matter? You think? Not! Yes these matter, let them leak and you can kiss that "Bathtub Tripower Valley Pan" bye bye! Rust thru in the valley pan equals major vacuum leak. Skuffed piston skirts, poor performance, fuel economy and etc. Gosh, who is that Idiot saying you can just install screw in pipe plugs in this hole in the timing cover and intake. No flow needed. What a Retard