I have almost the identical combo and run a Demon 850 Speed Demon.

Most people initially think the car has some sort of fuel injection because it starts instantly, never loads up in traffic and puts up good numbers.

I could not be happier with a carb and used to run all Holleys.

'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.