Both Carter and Stromberg made aftermarket replacement carburetors that are very close to bolt on swaps for the 235.
The carbs for trucks came with manual choke, the carbs for passenger came with automatic choke (hot air on the Carter, electric on the Stromberg).
Either the Carter or the Stromberg should be available as a rebuildable core, but finding a rebuilt unit may be challenging, and having seen some of the "rebuilt" carbs being offered, I would want to buy one for LESS than the price of a core, UNLESS I knew the rebuilder.
As to the other imitation unit mentioned in this thread, I disagree with Jerry. These REALLY are useful...........................................IF you have a rabbit problem in your garden, and a strong right arm

And Jerry.........you are just plain wrong

in calling them clones. If you check your dictionary, you will find a "clone" is an EXACT reproduction! These things are imitations!
Jon.