When buying a replacement Briggs for your machine, you would reuse the governor spring, clutch, throttle, and choke cable from your original setup. It is a bolt in mod no matter which model 23 with a 1" horizontal shaft engine you buy. You may need to adjust your carb to your preference, but the blocks are all the same. The one option I would avoid unless its a good deal is the gas tank air box. The standard air filter cover is what fits under the machines stock engine hood. I used an engine that came with the gas tank on an Attex and just used a bucked for an air box, but the factory setup is a bit better looking.
l like to buy stuff and no I don't do payments!