I have the powermaster 1 wire 95 amp alternator( charges nicely from 1000rpm and up) with a big interstate battery..think its around 900cca
Havent had a battery charger on the car in two years… running elect WP/ Fan/fuel pump/ msd, etc, etc, even after going rounds

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, low 10.30’s 1/4
1.41 best 60 foot
6.56 at 104.17