Most formulas to determine correct size use rpm and cubic inch.
That said it generally isnt accurate.
I have found bigger is always better in a race car application.
I had a hot 318 motor that ran a tenth better with a 950 than it did with two different 750’s i tried on it, as an example

69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8