Slinky
Great! I'm brain storming here. My idea is how to input cyclonic air flow into the throttle bodies, cheaply. Could be anti-cyclonic for the folks down under

Which ever way the toilet (water closet) circulates. I'm by no means a mechanic; so, whether such would be advantageous for TBs is a question for all ya'll that are so enabled. BTW: "all ya'll" is plural.
I'm thinking of kicking a slinky down the stairs. Or a the very least employing a few spirals off the length of a slinky to impart some air circulation for increased air and fuel mixture

Your photos will give me some greater insight. I've a TBI spacer device on my K1500 with a Jasper 350cid V-8. It's no more than an inch tall. It seems to have improved both mileage, by 1-2 mpg, and throttle response. I have only have seat of the pants support for the latter.