Used Tillotson KA7A carburetor as used on the Mark 20H conversion. Carb has full choke assemble and a full butterfly. Drilled for spary shield with mounting screw, if you do not want to mount a spray shield to the carb place a couple of washers under the screw head and tightens down to plug the hole. This carb has a part of the side rail of the throat removed. It has a new high speed knob and is in very good condition.