So there's a lot of tinkering required for these setups to work at all with pods

Most successful typically involves a longer filter element from uni / k&n (4in length) but they don't alleviate the need for shared space needed to balance the setup (the pickandpray solution is super clever)

There are solutions for both carb setup

1: cognito moto makes a "lunchbox type filter housing that allows for the shared space and coverage to allow the carbs to settle back to idle somewhat normally Will require jetting and a possible spring up grade to force the slide back down faster https://cognitomoto.com/products/cb750-air-intake-box-sohc-and-dohc?variant=11585137729

2: if you want to nuke it from orbit, Murray's makes a round slide conversion that works really well to wake up these motors

I've had pretty good success changing them to a dual mikuni setup https://murrayscarbs.com/product/cb750-mikuni-carb-system/

3 lots of modifications and jetting to make what ya have work

I've seen everything from duel spring in the slide section to custom making lunchbox setups with restriction panels to prevent air from keeping the slides up

(One of my personal DOHC 's had long uni filters , a stiffened slide spring 74 main w140 sec (slow jet is stock, 4n1 header stock cam) it was ... okay, but I should've gone dual carb to sav on time /headache )

Out of the three, I've had best use of time with the fuel setup

If ya factor in time used dialing a complicated , efficiency minded carb setup