Your questions sound similar to some of mine before buying a 1320 last year.
What are your performance expectations / goals?
Do you want to go rounds in bracket racing, or have fun at the test & tune?
Is swapping wheels either at the track or at home before driving to the track an option?
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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