Kirbans, Ramchargers, Full Throttle has a new composite I think, Postons.
Most of the vendors have them.
If you don't want to wait for shipping, do a search and dig up a ROL or Felpro number and find one at a local parts house that carries the name brands.
Should be some threads out there with good part numbers in them.
WHen doing an oil pan gasket, you should always use an engine primer to get oil back in the system, If not it may start and run dry , which is not good