Right carb for a souped-up 360?

Kyle's Demon with a 360/XE268H ran a 750 holey DP carb, 2500 hughes converter and 2.76 gears. Car ran fine and got 20mpg... it was out of the box , no tuning except for base idle settings. Doesn't bog, runs well.

The 284 cam is a bit bigger but would still run with it.