My bike is a plunger. The rocker feed pipe goes up next to the vertical frame tube and passes close to the rubber air filter connection.
Those connectors are fiddly. A small screwdriver with the end heated and bent to 90° might help you to pull the rubber around the carb mouth. That tool is also very useful for getting the rubber grommet that cushions and holds the speedo. (on bikes that have the cowpat headlamp cowling)
You might like to get a pair of bolts for the carburettor to replace the original studs. This mod allows you to slide the carb in to place while engaging the lip of the air filter connection.
This operation though is not straightforward as you need to get the heat insulator and fuel spill tray in place all at the same time while trying not to crumple the gaskets that have been smeared with sealant. Great fun!
Mind you it's a doddle when compared to getting the rocker box on!