Main Bearing Set for 1939 - 1948 Ford Flathead V-8 221 and 239 ci with 2.498" main journals at STD.  Like Ford part numbers 81A 6333A and 81B 6331 A and set number 81A-6330-A.  The front and center will be NOS Ford, the rear may be other brands.

You can use these on your new SCAT crankshaft!