they're CV carbs they come as a system with airbox, long velocity stacks and intake snorkel, changing to pods is for looks only, for street/road riding pods won't match airbox setup
foam and paper air filters clog fast and permanent and restrict the F out of the engine, go proper k&n they're a pleated wire mesh/cotton fibre combo, will out-live the owner, keep the fibre oiled, clean it by swishing in a bowl of petrol.,
always the usual fluffy farty CV carbs when mated to pods are an annoying pita.. some will claim nah they're fine.. but they're just telling lies... hoho
the airbox setup you can mod with a few extra holes drilled in the bottom for a bit more air intake, the crankbreather hose you plug with a small foam-filled tube or suchlike. tape over the crank-hose hole in the box
the spidery "re-breather" inside the box you can remove and throw into the junkpile,
hand-wringers will say there's more microscopic "wear" inside the engine with a free-er flow filter, hoho still the engine'll out-live them too...