You have the Intake and air filter adapter hanging on each side of the carb. You'll remove and re-use those. Search Tecumseh TVS120 carburetor. Bet it's close. Better yet - find your engine model #.
Installed the Carb today runs great. Mowed the grass. I have a new mower with bag but I like this old Craftsman for a quick mow. It's lightweight and easy to maneuver around all the shrubs and obstacles we have.