If it's a Stick, keep the double pumper. If it's an auto, get a vacuum secondary. Make sure that you keep the same lifters with the lobes they came off of. If there is any chance that they get mixed up, get new lifters. If you can afford them now, GET NEW LIFTERS.
Rob
That 750 DP is a very good carb. Had one on my 440 Daytona Running 10.15. (couldn't put on my 1050 because of the PRO thing.)