2020 small block race?

Ok after some math and talking if you take
-.5 off for 4" stroke + the hit for whatever block you would be using would that be fair? -.5 for 4" stroke -.6 for 360 block -.4 for overbore would get you a 408LA or 14.4 leaving everything else alone based on base car.
Wouldnt help on Big blocks but one thing at a time.