I had that S/S carb on the 360 that was in my Dart when i bought it, but the 750 version, not the 830. Ran it at the track, worked well. Swapped it for a trick 950 carb that i had laying around that was on an engine masters entry.
The 950 was just hair more than a tenth better on the same night at the track.
Hope this gives a little perspective.
Car runs whats in my signature


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