00295-00103 "Seal Packing" is what they call the OG black stuff. Its a little pricey, but it worked really freakin well last time I did an oil pan. Its some sort of black silicone, and I liked it (but I'm maybe a bit too biased towards OE stuff.

)
However, Permatex gray stuff like Bitter mentioned is probably just fine. I don't think I'd do a actual gasket. 3sgte, 5sfe, 7afe, and 4age all used the black goo when they we made, and work just fine.