Check out the Holley-Webers on my 46 pickup in the gallery, Jim Merritt's 46. As with any carb, I had to play with jets a bit but there's much to be said for running a NEW carb vs the 50 year old ones we all fight with.
These are available new or rebuilt from 'Langdon's Stovebolt, he also has the adaptor to bolt right on. Check out
WWW.stoveboltengineco.com Or call Tom at 586 739-9601
Best of luck