This is probably not of any use since the FYRG will not be using the 8-201A in their "restoration", but I came across the fuel consumption figures while looking for some other information, so here they are just for history:

Fuel Consumption at Idle: 1.5 Gallons Per Hour
Fuel Consumption at Rating: 37 Gallons Per Hour

This looks pretty similar to the 6-567 which would indicate a BSFC between .403 and .408 Lb. per BHP-Hour.