They are good numbers for sure, but I’d like to hear how the dyno fuel system was hooked up to the motor.
Were the fuel lines coming from the dyno and going directly to the carb?

For the run using the dyno fuel system, the BSFC numbers don’t really make a lot of sense.
Primarily, in that the weather correction factor(based on what the BSFC numbers work out to for uncorrected HP) appear to change from about 12% at the start of the pull....... to about 19% at the end of the pull.

Based on the fuel flow and BSFC number for last line of that sheet, the uncorrected HP should be 696HP.