360 oil pan?

Test fit pan to block. No gaskets, just check that pan flanges are straight and flat. Do this for new or used pans. On used pans check that no one over torqued the bolts and "dimpled" the metal around the holes. If so tap them back with a small hammer. Others I'm sure will provide more info about gaskets and sealants. Good luck. Let us know how it goes. A picture or two is always cool.
Mike