As you can see the heat shield needs to be cut and modified. You might be able to grab it from the updated engine. other than that it’s a direct fit. You need filter, inlet, new carb gasket, fan housing, air filter cover, and 2 little screws that hold cover on. The fan and fan cover are the same. I can upload a parts list when I get a second.
There’s lots of good YouTube videos of “Snow blower impeller modifications” with inspiring footage of machines throwing snow like never before. I chopped up a generic mud flap when I modded mine. Still haven’t succeeded in getting wife to take a proper picture of its new, improved snow throwing ability. Maybe next winter.