The carb you have now is a "divorced" choke model, choke coil was mounted on the intake, not on the carb.
The later hot-air units convert to electric easily, and are better made carbs and quite "universal" once converted to e-choke.
I would avoid starting with anything commercially "remanufactured", more often than not they are a "Frankenstein" for parts and "hacked" up internally. I do this for a living, and avoid them like the plague!.......Cliff