Carter/Ball carburetor- Help ID

As mentioned, the Holley 1920 was designed for lowest cost, and it wasn't just used on Mopars. "Holley better than Carter" is mainly in early 4 bbl world where factory Holley usually had vacuum secondaries vs mechanical in Carter. The later is the Edelbrock after-market seen on gazillion muscle cars, and is simple and reliable if not quite as good on performance & mileage. But, the 4 bbl design peak was the Rochester Quadrajet (GM's) vs Carter Thermoquad (Mopars), both with tiny primary bores ("spread-bore"), and closely matched, so Carter did catch up in the end. Both are way too large to use on slants. Of course none of this matches later TBI or MPFI.