commando steel shim head gaskets

I need a pair of NOS oem steel shim head gaskets for the commando engine. P/N 2463 338 for early 273 3.63 bore .021 thick ...............
IF I can't find the first number , here are second choices >>>>>>>>>>>>>>>>
for 1968 318 p/n 2806 984 bore size 3.91 .020 thick
for 1969 318 p/n 2951 259 .028 thick 3.91 bore
for 1970 318 p/n 2946 082 .028 thick 3.91 bore. let me know what you have .
Thanks !