I called Best Gasket and asked them about the possibility that they shipped a RS639SA Chevrolet Truck 6 261 1954-62 gasket set with a FelPro head gasket.

I'll let you know their response.

Here is what the Best Gasket head gasket should look like?
Here is the Fel-Pro head gasket.
They sure do look alike.

Tim
1954Advance-Design.com
1954 3106 Carryall Suburban
1954 3104 5-window pickup w/Hydra-Matic
The 216 and early 235 engines are not "splash oilers" -- this is a splash oiler.