Any LA 360 oil pan will work, but there is a catch. The LA pans have two notches on the bottom front of the pan where the timing cover meets the pan rail.
You can hammer them out flat with a dolly and use the one piece Magnum gasket with a touch of sealer there and in the corners. Or, leave the pan as is and use the 4 piece LA gasket set and silicone. I like Superformance gaskets.
I like Permatex Ultra Seal, but what ever you use, clean the parts with brake clean or lacquer thinner before applying it to remove the oil residue.
I can tell you if you use the one piece Magnum gasket and the LA oil pan without doing the above, you will have a big oil leak that is hard to see where it is coming from. because the gasket has flaps that cover the opening from the notches.
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