holley dominator 750
Yep 750-850 range custom tuned. You will get better air flow and responce with a smller carb.
The Doms are more gear to strip and full throttle driving. A good DP is a great dual purpose carb when setup correctly.
750 is most likely OK, but there is more power it sounds in your combo on the top end. That 850 may be worth about 10hp or so above 5k...