Spark plug gap recomendations

Orange box and a generic Accel chrome coil has always been my "go to" for a long while. This one got EFI so I needed an ignition that generated a "square wave" tach signal. After 8 years the EFI wouldn't take corrections/adjustments anymore so its was unceremoniously removed. Put the 780 back on and trying to start over.

Thanks for the quick response. 0.045" it is...