1920 holley rebuild kit

Autozone has the Sorensen brand kits.

Mike's Carburetors sells kits and is the only supplier of new floats for 1920 (that I know of). They also supply welch plugs intheir kits so you do more in getting the carb apart. They also have good re-build videos.

Be aware that the choke pull off and the accelerator pumps shafts changed in production over the years (and some other parts) so you may need to get different parts depending on your exact list number of 1920. Sorensen and Mike's have multiple 1920 kits for this reason so get the carburetor list number first.