Should I modify my 750dp, or just go bigger?

Is this a full blown race car that your leaving at 4500 or higher on the transbrake? Then go bigger where low speed drivabillity and part throttle are not needed. If its a street strip car, then stay with the 750. This is why i dyno everything, there is no guessing as to what the motor wants vs what i think it needs.

Example. My new 426 wedge 520 HP used 630 cfm. So the AED 750 HOM i have is perfect, its crisp resonsive, it accelerates great no bogs farts of stumbles.

There is a 428 stroker ford small block on the dyno now, big compression victor heads big roller cam etc, it has a 1050 dominator on it, and it is using 930 cfm. So thats perfect, he has a light car, leaves off the button. he made 780 HP

Decide what your doing with the car and get the carb that best suits your needs. Dont over carb your combo you will have more problems than you need.