The engine # is stamped into a machined flat on the top left side of the cylinder block, behind and inboard of the ignition distributor. There is a circular plug of about 1 1/4" dia. next to it. It is likely somewhat dirty, and will need to be cleaned off to read the #. The complete # will be in the form 110.9xx - 12 - xxxxxx.
The numbers that you quoted are casting numbers.
That said, all M110 head gaskets should interchange.