Just my OPINION based on my personal experiences, but... I think 4150s with down leg boosters will be easier to tune for that combination. FWIW, I'll be trying out a couple of different 4150 annular carbs in the future to see if I can get them to run as clean on the street and still perform well on the track as my "go to" 4150 down leg carb(s).
2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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