750cfm too much?

C130 Chief said
With vacuum secondaries think of it as "UP TO" 750 CFM. You may lose a little low RPM throttle response compared to a 600, but it will work fine.

By "dual feed" you mean center hung floats, not double pumper. This confuses people sometimes. Looks like a 3310.

by dual feed he means it has dual inlet's, one feed to each bowl, a single feed has just a single inlet to the front bowl and a small tube that runs front to back to fill the rear bowl. that being said, bolt that thing on and run it, it will work fine