FWIW, The Holley 5200 and 6500 series were licensed copies of progressive Webers and were used on various American cars. My Vega had a 5210, IIRC. I know, that's not the best recommendation ...
Along those same lines, I sold Holleys back in the 70's. If I remember they were a replacement for Ford's 2 stage 2 barrel on Pinto's. A friend replaced the Solex on his Opel with one. Made that 1800 scream!
